Technical Steering Group
The Technical Steering Group (TSG) is comprised of:
Ellie Burkill - XCO2 (Chair)
Jane Anderson - WLCN
Adam Baranowski - BBP
Philippa Birch-Wood - UKGBC
​Orlando Gibbons - UKGBC
Julie Godefroy - CIBSE
Jess Hrivnak - RIBA
Christine Pout - BRE
Will South - LETI
Fabrizio Varriale - RICS
Sam Wallis - Envision
Will Arnold
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Former Technical Steering Group members
Yetunde Abdul - UKGBC (January - November 2025)
Clara Bagenal George - LETI (May 2022 - September 2025, Chair May 2022 - December 2023)
Tom Wigg - UKGBC (2022 - January 2025)
Katie Clemence-Jackson - QODA Consulting (Chair December 2023 - October 2024)
Nektarios Gkanis - Carbon Trust (May 2022 - February 2024)
Matthew Collins - RICS (May 2022 - August 2023)
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Pilot Testing Team:​​
Amrita Dasgupta Shekhar (Greengage Environmental) - Pilot Testing Technical Manager (January 2025 - Present)
Julio Jimenez Castillo (Greengage Environmental), January 2025 - Present
Akshita Gupta (Greengage Environmental), January 2025 - Present
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Management and Technical Support:
Daniel Doran (Saint-Gobain) - Technical Reviewer, Version 1
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Previous Management and Technical supporters:
Hayley Stephens - Executive Assistant 2025
Rosie Bard (Orms) - Technical Project Manager, January 2024 - October 2024
Daniel Doran (Lifecycle Sustainability) - Technical Writer, Pilot Version
Katie Clemence-Jackson (QODA Consulting) - Technical Project Manager, January 2023 - December 2024
Zoe Black (RIAS) - Project Administrator
Zoe Watson (Zoe Watson Consulting) Sector Group Project Manager 2024
Ciara Durkin (Laing O’Rourke) - Technical Secretariat
Annika Buser (BBP) - Project Administrator
Gemma White (Overbury) - Project Administrator
Issy Budd (WASPS Studios) - Project Administrator
Jack Poulton (Simpson Haugh Architects) - Consultation Insights Analyst
Ellie Burkill (XCO2) - Task Group 1c Secretariat and Project Management Support, 2022-24
Faidon Christodoulou - Sector Group Project Manager, 2022-23
Gilbert Lennox-King (Construction Carbon) - Interim Project Manager Sep - Dec 2022
Matt Cox (Arup) - Governance Board Project Manager 2022
Karen Shi (Cundall) - Targets and Limits Project Manager 2023​​​​
Governance Board
Our Governance Board includes founding and observer members. They are:
David Partridge (Chair)
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Founding Members
BBP - Sarah Ratcliffe
BRE - Jonathan Rickard
CIBSE - Anastasia Mylona
IStructE - Patrick Hayes
LETI - Louisa Bowles
RIBA - Judit Kimpian
RICS - Charlotte Neal, Amit Patel
UKGBC - Simon McWhirter, Yetunde Abdul
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Observer Members
ICE - Lewis Barlow
PIA - Bill Hughes
RIAS - Angel Morales-Aguilar
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Comms and Stakeholder Engagement Support:
Jenny Stephens (Bracket Communications) - Comms Manager
Clare Murray (Levitt Bernstein ) - Graphics Support
Lesley Graham (RICS) - Graphic Design
Phoebe MacDonald (RIBA) - Public Affairs
Samuel Leeson (RIBA) - Public Affairs
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Previous Comms and Engagement supporters:
Alex Johnstone (Architype) - Website support
Beth Blomfield (LETI) - Comms support
Brooke Penman (UKGBC) - Comms support and Press Release
Clare Murray (Levitt Bernstein/LETI) - Graphic Design
Erika Petrova (Hawkins\Brown) - Graphic Design
Julia Galves (Hawkins\Brown) - Graphic Design
Julia Skeete (SOM) - Stakeholder Engagement Lead
Lucy Whitman (CIBSE) - Comms support
Lynn Urbanik (Passivhaus Trust) - Communications Manager
Mary Costello (LETI) - Comms support
Matt Broad (Arup) - Communications Lead 2022-23
Mina Hasman (SOM) - Stakeholder Engagement Lead
Panos Balalas (CIBSE) - Comms support
Ruby Oshea (RIBA) - Press Release Coordination
Sophie Tysoe (BBP) - Comms support & Administrator
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Working Groups 2025
Delineation Working Group
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Alexia Laird - Sustainability Director - Landsec
Neil Granger - Senior Director & Head of Sustainability - TFT
Alex Pitman - Director - DAL Energy Ltd
Salem Qunsol - Principal Sustainability Consultant - Verte Ltd
Robert Cohen - Techical Director - Verco
Stephen Hill - Associate Director - Arup
Fiona Lomas-Holt - Director, Sustainability & ESG - Turley
Theodor Bratosin - Senior Sustainability and Building Physics Engineer - Cundall
Rosie Bard - Associate Director - ORMS
Andrew Moore - Associate Director - Hilson Moran
Elina Grigoriou - Design & Sustainability Director - Grigoriou Interiors
Tom Tang - Senior Consultant - AltkinsRéalis
Anja Schellenbauer - Associate Director - John Robertson Architects
Malcolm Hanna - Senior Sustainability Manager Real Assets - Legal & General Investment Management (LGIM)
Peter Bartley - Head of Sustainability - Aew Architects
Will Belfield - Environmental & Sustainability Manager - Overbury
Adam Baranowski - Member of TSG - UKNZCBS
Iain MacDougall - Head of Sustainability - Red Engineering
Simona Vasinton - GDC Sustainability Program Manager - Equinix
Alex Edwards - ESG Director - Bruntwood SciTech
Practical Completion Working Group
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Will Arnold - Head of Climate Action - IStructE (Chair of Working Group)
Robert Cohen - Technical Director, Real Estate - Verco
Rosie Bard - Associate Director - ORMS
Theodor Bratosin - Senior Sustainability and Building Physics Engineer - Cundall
Adam Baranowski - Climate Change Lead - BBP (Member of TSG)
Fiona Lomas-Holt - Director, Sustainability & ESG - Turley
Juan Lafuente Cilla - Senior Consultant - Arup
Ross Boulton - Land Securities
​Andrew Moore - Associate Director - Hilson Moran
Malcolm Hanna - Senior Sustainability Manager Real Assets - Legal & General Investment Management (LGIM)
Alex Edwards - ESG Director - Bruntwood SciTech
Tom Tang - Senior Consultant - AltkinsRéalis
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Task Groups 2022-2024
Task Group 1a - Operational Energy
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Adam Baranowski - Climate Change Lead - BBP (Member of TSG)
Alexia Sofia Charisi - Associate- Savills Earth
Amrita Dasgupta Shekhar – Head of ESG and Net Zero - Greengage Environmental Ltd.
Antonietta Canta - Decarbonisation & Resilience Associate - Arup
Colin Rees - Associate Director - IES
David Adams - Director - David Adams Consulting
Douglas Drewniak - Senior Sustainability Manager - Building Performance - Willmott Dixon Construction
Eimear Moloney - Director of Operational Assets - Hoare Lea
Frankie Demetriades - ESG Manager – abrdn
Gillian Brown - Senior Manager Sustainable Design – Lloyds Banking Group
Henry Ibitolu - PhD Researcher - School of Engineering at the University of Edinburgh (Task Group 1a Secretariat)
Ingrid Berkeley - Principal Sustainability Consultant - Max Fordham LLP
Joe Jack Williams - Partner - Feilden Clegg Bradley Studios
Julie Godefroy - Head of Net Zero Policy - CIBSE (Member of TSG)
Luisa Brotas - Sustainability and Infrastructure Lead- Royal Borough of Kingston upon Thames
Malcolm Hanna - Senior Sustainability Manager - Legal & General
Marion Baeli - Principal, Sustainability Transformation - 10 Design
Neil Granger - Senior Director, Head of Sustainability - TFT Consultants
Nils Rage - Head of ESG - Stanhope plc
Rachel Mitchell - Researcher - UK Passivhaus Trust
Robert Cohen - Technical Director - Verco
Robin Pritchett - Head of Building Performance - Cundall
Ruairi Revell - Head of Real Estate ESG - Abrdn
Sarah Lewis - Research and Policy Director - UK Passivhaus Trust
Sukriye Robinson - Architect - Skidmore Owings and Merrill
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Task Group 1b - Embodied Carbon
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Will Arnold - Head of Climate Action - The Institution of Structural Engineers (Task Group Chair)
Fabrizio Varriale - Place & Space Analyst - RICS (Task Group Sub-chair)
Adam Graveley - Head of Technical and Innovation - Future Homes Hub
Alexia Laird - Sustainability Director - Landsec
Alice Moncaster - Professor of Sustainable Construction – UWE
Andrew Swain - Group Sustainability Manager - I M Properties
Chris Brown - Director - Climatise
Daniel Tomlinson - Associate Director - GWP Architecture
Duncan Cox - Associate Director, Sustainability- Thornton Tomasetti
Fiona Lomas-Holt - Director, Sustainability - Turley
Hugh Dugdale - Director – Hines
Ian Poole - Associate Sustainability - Elliott Wood / Senior WLC Officer - Westminster City Council
Louisa Bowles - Head of Sustainability- Hawkins\Brown
Marika Gabbianelli - Senior Decarbonisation Consultant - WSP
Orlando Gibbons - Senior Engineer- Arup
Pat Hermon - Technical Lead- BRE
Philip Guthrie - Associate Director - Hydrock
Rosie Bard - Associate - Orms
Taby Halliwell - Associate - Savills Earth
Tom Tang - Consultant - AtkinsRéalis (Task Group 1bSecretariat)
Will Wild - Representative - Centre for Window & Cladding Technology
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Task Group 1c - Top Down
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Jess Hrivnak - Practice Technical Adviser (Sustainability) - RIBA (Member of TSG & Task Group Co-Chair)
Tom Wigg - Senior Advisor - UKGBC (Member of TSG & Task Group Co-Chair)
Angie Bara - ESG Associate - Ecotectural
Ben Ross - Head of Aim for Zero Real Estate - Verco (to Jun 2023)
Ben Hopkins - Senior Associate - Bennetts Associates
Ellie Burkill - Graduate Sustainability Consultant - XCO2 (Task Group 1c Secretariat and additional project management support) (to Sep 2023)
Greg Waring - Senior Building Performance Engineer - Arup
Helen Bennett - Principal Architect - Helen Bennett Projects
Harper Robertson - Senior Consultant - Ricardo Energy & Environment
Janine Campbell – formerly Inhabit (Task Group 1c Secretatriat)
Jannik Giesekam - Chancellor's Fellow - University of Strathclyde (to Dec 2022)
Madeline Homewood - Associate Sustainability Engineer- JLL
Lorenzo De Donatis - ICL Manager - IES
Peter Swallow - Sustainability Manager (Europe) - Grimshaw
Rachel Capon - UK Concrete Sustainability Programme Coordinator - Mineral Products Association Ltd
Simon Hatherley - KTP Research Associate - AHMM
Shane Hughes - Director of corporate Net Zero Services - Ramboll
Snigdha Jain - Director, ESG & Sustainability- Turley (to Jun 2023)
Tom Spurrier - Director Sustainability- Hoare Lea
Jon Whiteley - Associate - Ramboll
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Task Group 2 - Carbon Accounting
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Anna Tsoumi - Associate Director - Hilson Moran
Brett Ormrod - Director, Net Zero Carbon Lead - LaSalle Investment Management
Christine Pout - Principal Consultant - BRE (Member of TSG)
Cinthia Espino Castillo - Associate Senior Sustainability Coordinator - Foster + Partners
Dave Worthington - Managing Director - Verco
Dr Yair Swartz - Lecturer & Researcher - UCL
Erik Landry - Director, Climate Change - GRESB
Hugo Bennetts - Junior Consultant - Eunomia Research & Consulting
Isabella Valencio - Senior Sustainability Consultant- Planet Mark
Jane Anderson - Owner - Construction LCA
Kartik Amrania - Head of Building Sustainability Team - Sweco UK Limited
Nick Gorrie - Associate Director of Sustainability - Engineering Services Consultancy
Paul Parker - Carbon Specialist - Ramboll
Richard Twinn - Associate Director - Buro Happold
Rowan Packer - Executive Director of Sustainability - MAPP
Simon Leek - Company Carbon Manger - Sir Robert McAlpine
Sarune Ringelyte - Principal Sustainability Consultant - Savills UK
Xander Opoku - Architect & Sustainable Design Consultant - Atkins
Adam Baranowski - Climate Change Programme Lead - Better Buildings Partnership (Member of TSG)
Nektarios Gkanis - Senior Manager & Commercial Real Estate Lead- The Carbon Trust (Member of TSG April 2022-February 2024)
Simon Sturgis - Targeting Zero LLP​
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Task Group 3 - Reporting, Disclosure & Verification
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Aazraa Pankan - Sustainability Consultant - Introba (formerly Elementa Consulting)
Andrew Frost - Associate Director - Thomson Environmental Consultants
Christine Pout - Principal Consultant - BRE (Member of TSG)
Doug Morwood - CEO - Insight Futures CIRRCLE Ltd
Emma Morgan - Building Performance Analyst - Carbon Futures
Faidon Christodoulou - Senior Manager - Sustainability - Amazon
Francesca Wilkinson - Sustainability & Environmental Manger - Willmott Dixon
Gilbert Lennox-King - CEO - Construction Carbon
James Parker - Senior Sustainability Manager - Clarion Housing Group
Jonathan Li - Associate Director - Savills UK
Mark Jenkinson - Director - Crystal Associates
Matthew Pygott - Principal Carbon Consultant - Hydrock
Nathan Millar - Partner - Environmental Design - Foster + Partners
Poppy Parsons - Head of Low Carbon Construction - Galliford Try
Rakesh Vazirani - Head of Sustainability services - TÜV Rheinland
Ross Holleron - Head of Innovation - Sero
Sam Wallis - Director - Envision (Member of TSG & Task Group Leader)
Tom Saunders - Co-Founder/Managing Director - Sintali
Tony Legerton - Technical Manager - NG Bailey
Xuecheng Wang - Junior Designer - Pilbrow and Partners
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Sector Groups 2022-2024
Commercial residential (e.g. student residential, care homes)
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Ankit Singh - Waterman (Group Lead)
Ara Nik - LifeProven
Christos Skordis - Savills
Darren Evans - Darren Evans Ltd
Davey McElwee - Waterman
Gary Frame - AtkinsRéalis
Gilles Alvarenga - Cundall
Hiba Talmoust - Waterman (Co-Lead)
Kiro Tamer - Keltbray
Michael Brogden - Darren Evans Ltd
Mike White - Smith and Wallwork
Peter Bentley
Peter Mayer - Thomas Miller
Peter Savill - AtkinsRéalis
Sam Luker - AESG
Sarah Linnell - Cundall
Serena Gugliotta - WSP
Sofi Zickerman White - LifeProven
Tom Lelyveld - AECOM
With special thanks to Dylan Kenny and Niall McGowan - Lamorbey Associates for modelling inputs
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Culture and entertainment
Andrew Frost - Thomsonec
Ben Hopkins - Bennetts Associates
Ben Melham - Mortice Consulting
Catherine Cosgrove - Austin-Smith:Lord
Christian Wallace - Charcoalblue
Claire Buckley - Julie's Bicycle
Colin Darlington - Max Fordham LLP
Daniel Kew - Bennetts Associates (Group Co-Lead)
Diana Dina - Haworth Thompkins
Harry Sumner - Bennetts Associates
Kathryn Simpson - National Museums Directors Council
Klara Svoboda - Bennetts Associates (Group Co-Lead)
Mark Barry - Architype
Natasha Watson - Buro Happold
Oliver Heywood - Allies and Morrison
Peter Fisher - Bennetts Associates (Group Co-Lead)
Richard Boston - V&A
Will Mesher - Haworth Thomkins
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Data Centres
Anders Eklund - Hoarelea
Andrew Shaw - Lloyds Bank
Ed Hoare - Arup
Iain MacDougall (Group Lead)
Jon Nuttall - Hoarelea
Matthew Baynes - Schneider Electric
Sean Davin - Arup
Simona Vasinton – Equinix
Thomas Mcdonagh - Red
Tom Spurrier - Hoare Lea
Alex Doey - RED
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Healthcare
Hope Lovelady - Mott Macdonald (Group Lead)
Adam Newman - Turner & Townsend
Alex Pitman - Alder Hey NHS Trust
Ben Barker - Hoare Lea
Christopher Pottage - Currie & Brown
Colin Rees - IES
David Buick - AECOM
Ian Poole - Elliot Wood
Ross Wood - ISG
Ryan Dunne - Arup (Group Lead)
Sam Luker - Consult Sustainability
Serena Gugliotta - WSP
Tassos Kougionis - McBains
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Heritage Expertise
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Amad Kayani - Historic England
Andy Haigh - Grosvenor (Group Lead)
James Sibson - Feilden Clegg Bradley Studios (Co-chair)
Jill Fairweather - Cadw, Welsh Government
Joe Jack Williams - Feilden Clegg Bradley Studios
Matthew King - National Trust
Miguel Godfrey - Government Property Agency
Sarah Khan - Roger Mears Architects
Samantha Organ - National Trust / University of the West of England
Soki Rhee-Duverne - Historic England (Co-chair)
William Bordass - Usable Building Trust
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Higher Education
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Andrew Wholley - Mott MacDonald
Claire Akparanta - University of Aberdeen
Gillian Brown - Lloyds Banking Group
Greg Hardie - Arup
Helena Tinker - Manchester Met
Joe Croft (Group Lead)
John Bailey - Turner & Townsend
Karen Turnbull - AtkinsRéalis
Mehdi Shahrestani - University of Reading
Mike White - Smith and Wallwork
Philip Mannis - Hoare Lea
Simon Leek - Sir Robert McAlpine
Zoë Glander – Overbury & Morgan Lovell
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Homes
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Adam Graveley - Future Homes Hub
Alex Baines - Saint Gobain
Bryce Gilroy-Scott - Centre for Alternative Technology
Chris Brown - Climatise
David Adams - Future Homes Hub
David Leversha - WSP
Emma Francois - WSP
Emma Taylor-Beale - Daikin
Gary Frame - AtkinsRéalis
George Martin - Building Performance Network
John Alker - L&G
Julian Brooks - Good Homes Alliance CIC
Kat Adair - Ridge & Partners
Katie Cairns - Assael
Louise Clarke - Berkley Group- (Group Co-Lead)
Marc Seligmann - Maccrenor Lavington
Marcos Navarro - Natwest
Pete Marsh - Vor Group
Ryan Philp - Dalkin
Sam Cannon - Daikin
Sophia Ceneda ​- Howells
Tom Kordel - XCO2 (Group Co-lead)
Victoria Thorns - London Legacy Development Corporation
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Hotels
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Areti Makantasi - JLL
Carol Lock - RSP Consulting Engineers LLP
Hugo Marques - GEG Engineering
Ian Steward - Recoup
James Allison - Bennetts Associates
Jorge Abarca Montero - WSP
Katarzyna Lewandowska - Bennetts Associates
Nelly Martinez - F+P (Group Lead)
Oleksandr Poborskyy - Cundall
Rodrigo Martinez
Thibald Gerardin - Cushman & Wakefield
Yilin Wang - Ramboll
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All roles stated are those at time of contribution. Thanks to the many individuals and organisations for giving their time and expertise so generously.
Logistics/Warehouses
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David Leversha - WSP (Group Lead)
Ellen Jones - ISG
Frankie Demetriades - abrdn
Hannah Bailey - JLL
James Lomas-Holt - RIDGE
Jamie Baxter - Carter Jonas
Jonathan Trice - Omega RE
Jorge Abarca Montero - WSP
Kat Adair - RIDGE
Luke Blyth - Hoare Lea
Michael Sansom - Steel Construction
Mohamed Abushariah
Peter Bartley - AEW Architects
Sarah Chipchase - RIDGE
Theodor Bratosin - Cundall
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Offices
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Alexia Laird - Landsec
Alice Jackson - Hoare lea
Andrew Moore - Hilson Moran
Anja Schellenbauer - JRA
Ankit Singh - Waterman
Asif Din - Perkins & Will
Ben Hopkins - Bennetts Associates
Bev Taylor - Bruntwood
Carolina Caneva - Hilson Moran
Celine Mcloughlin-Jenkins - Aecom
Chantal Beaudoin - Knight Frank Investment Management
Daniel Skidmore - AECOM
David Kingstone - Buro Happhold
David Healy - WSP
Debbie Hobbs - CBRE Global Workplace Solutions (Group Lead)
Edwin Wealend - Longevity Partners
Elina Grigoriou - Grigoriou Interiors
Hala El Akl - Oxford Properties
Harry Sumner - Bennetts Associates
Ian Keenleyside - ISG
Katarzyna Lewandowska - Bennetts Associates
Laura Beaumont - Helical plc
Malcolm Hanna - Legal & General
Manas Bane - SRE
Matt Brinklow - Mace
Michael Nogas - Accenture
Neil Pennell - Landsec
Patrick Ho - Swire Properties
Peter Williams - British Council for Offices/ Stanhope
Robert Cohen - Verco
Salem Qunsol - Verte
Stephen Hill - ARUP
Will Belfield - Hoare lea
Zoë Glander – Overbury & Morgan Lovell
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Retail
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Alex Munro - ISG
Ana Sofia Narro Vallejo - Longevity
Apryl Pheasant - Sainsburys
Chris Croly - BDP
Eimear Moloney - Hoare Lea
Emily Cao - Colliers
Jamie Wise - DTZ Investors
Maria Spyrou - Turner & Townsend
Mark Gardiner - MJC Environmental Services
Neil Pennell - Landsec
Quinten Babcock - Transport for London
Richard Groves - Places for London
Robert Deacon - Grosvenor
Rob MacWhannell - BBP
Samuel Ukeke - Turner & Townsend
Yorgos Koronaios - Savills Earth
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Schools
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Christian Dimbleby - Architype
David Buick - AECOM
Emily Cao - Colliers
Fiona Brazill - Capita Public Services (Group Lead)
Hareth Pochee - Max Fordham
Jack Dempster - Woolgar Hunter
Kamar Zaman - MITIE Energy
Katie Carter - Galliford Try
Malcolm Buchanan - Woolgar Hunter
Marc Walsh - Unilin Insulation
Matthew Teague - Tata Steel
Matt Wrate - Chord Consult
Paola Pappas - Woolgar Hunter
Peter Courtenay - Bouygues
Poppy Parsons - Galliford Try
Rhodri Davies - ISG
Robert Hopkins - AHR
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Science and Technology
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Adeel Ahmed - Introba (formerly Elementa Consulting)
Andrea Botti - Stanton Williams
Andrew Somerville - Hoare Lea
Carl McKenzie - DEFRA
Gary Clark - HOK
Jack Tinsley - Hoare Lea
James Warne - WME
Liam Nicholls - Creative Places
Margarita Chorafa - Introba (formerly Elementa Consulting)
Matt Butler - Arup
Nathan Millar - Foster & Partners
Nicola Carniato - AKT II
Shane Mellon - Hoare Lea
Silviu Pirvu - Optimal Cities
Simon Ebbatson - Ridge & Ptnrs (Group Lead)
Simon Wyatt - Cundall
So Young Hyun - Sodexo
Will Fogden - Kadans Science Partner
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Sport and Leisure
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Gemma Christian - Expedition (Group Lead)
Graham Finnie - Sportscotland
Jonathan Tobin - EP&T
Mark Palmer - Max Fordham
Nicolas Beltran - EP&T
Nuno Correia - WilkinsonEyre
Paul Toyne - Grimshaw
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Additional Support
Alex Johnstone - Architype
Annika Buser - BBP
Beth Blomfield - LETI
Brooke Penman - UKGBC
Clare Murray - Levitt Bernstein/LETI
Erika Petrova - Hawkins\Brown
Gemma White - Overbury
Julia Galves - Hawkins\Brown
Mary Costello - LETI
Matt Cox - Arup
Sophie Tysoe - BBP
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