Cancer Research UK

English Heritage

RNLI

The Crown Estate

National Lottery Heritage Fund

Guide Dogs

The Woodland Trust

Kew Gardens

Scottish Canals

RSPB

Oxfam

Tate

National Trust

Macmillan Cancer Support

Adnams

ASBP

Ashden

Blenheim Palace

British Mountaineering Council

CAFOD

Canal and River Trust

Centre for Sustainable Energy

Charterhouse

Chester University

Church of England

Community Energy England

Devonshire Group - Chatsworth House

Ealing Council

Field Studies Council

Fit for the Future Network

Forestry England

Museum of the Home

Gloucester Cathedral

Highlands and Islands Airports

Historic England

Historic Environment Scotland

Historic Royal Palaces

HOPE Nepal

INTO

NCVO

Oxford House

Peak District National Park

Pembrokeshire Coast National Park

Regen SW

Royal Household Property Section

Society for the Environment

Somerset House

STBA

Suffolk County Council

Sustainability West Midlands

The Churches Conservation Trust

The Co-operative Group

The Rothschild Foundation

The Whitworth Art Gallery

West Suffolk Council

WWF

WWT

YHA

Zero Carbon World

Amnesty International

Arcadia Fund

British Heart Foundation

Grosvenor Estate

The Landmark Trust

Chelsea Physic Garden

Royal Yachting Association

Avanti West Coast

Bradford Trident

Butterfly Conservation

A Future Without Rubbish CIC

Wildlife Trusts

Portsmouth Cathedral

Royal Parks

Break Charity

The Health Foundation

Holkham Estate

South Kensington Estates (SKE)

The Architectural Heritage Fund

Salvation Army Trading Company Ltd (Satcol)

The Royal British Legion

Ditchley Foundation

Royal Armouries

Lambeth Council

Victoria and Albert Museum (V&A)

Watatunga Wildlife Reserve

Stonegrove Community Trust

Secret World Wildlife Rescue

Exmoor National Park Authority

Fulham Palace Trust

Northamptonshire ACRE

Dundee Museum of Transport

World Horse Welfare

Hampshire Cultural Trust

Archdiocese of Cardiff

Painshill Park Trust

The Penllergare Trust

Universities UK

Starting Step

The Vindolanda Trust

Alzheimer Scotland

Royal Hospital Chelsea

Dogs Trust

Glasgow AMIS

Urban Green Newcastle

Banana Enterprise Network

Diocese of Salford

BAROD

Portsmouth City Council

Visibility Scotland

Restoration Trust

Horniman Museum and Gardens

Caring for God's Acre

Heritage Lab

Heritage Trust Network

Devon Guild of Craftsmen

Burslem Port Trust