Cancer Research UK

English Heritage

RNLI

The Crown Estate

Guide Dogs

The Woodland Trust

Kew Gardens

Scottish Canals

RSPB

Colchester Borough Council

National Trust for Scotland

Tate

National Trust

Adnams

Alfred Gillett Trust

ASBP

Ashden

Blenheim Palace

British Mountaineering Council

CAFOD

Canal River Trust

Castello di Potentino

Centre for Sustainable Energy

Charterhouse

Chester University

Church of England

Community Energy England

Contact Theatre

Devonshire Group - Chatsworth House

Ealing Council

Farms for City Children

Field Studies Council

Fit for the Future Network

Forestry Commission

Geffrye Museum

Gloucester Cathedral

Highlands and Islands Airports

Historic England

Historic Environment Scotland

Historic Houses Association

Historic Royal Palaces

HOPE Nepal

Institute of Welsh Affairs

INTO

Low Carbon Hub

Macmillan Cancer Support

Martineau Gardens

NCVO

Northern Rail

NUS

Oxford House

Peak District National Park

Pembrokeshire Coast National Park

Regen SW

Severn Wye Energy Agency

Society for the Environment

Somerset House

South Downs National Park

Spike Island

STBA

Suffolk County Council

Sustainability West Midlands

The Churches Conservation Trust

The Co-operative Group

The Crown Estate Scotland

The Rothschild Foundation

The Wallace Collection

The Whitworth Art Gallery

Transition Cambridge

Union Street Sheffield

Watershed

West Suffolk Council

Wiltshire & Swindon History Centre

WWF

WWT

YHA

Zero Carbon World

Amnesty International

Arcadia Fund

British Heart Foundation

Flintshire Council

Grosvenor Estate

Hospice in the Weald

St Aubyn Estates

Swindon Museum and Gallery

The Donkey Sanctuary

University of Manchester