Cancer Research UK

English Heritage

RNLI

The Crown Estate

Guide Dogs

The Woodland Trust

Kew Gardens

Scottish Canals

RSPB

National Trust for Scotland

Tate

National Trust

Adnams

ASBP

Ashden

Blenheim Palace

British Mountaineering Council

CAFOD

Canal River Trust

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

Highlands and Islands Airports

Historic England

Historic Environment Scotland

Historic Houses Association

Historic Royal Palaces

HOPE Nepal

Institute of Welsh Affairs

INTO

Macmillan Cancer Support

NCVO

Northern Rail

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

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

West Suffolk Council

WWF

WWT

YHA

Zero Carbon World

Amnesty International

Arcadia Fund

British Heart Foundation

Grosvenor Estate

The Donkey Sanctuary

University of Manchester

The Landmark Trust

Royal Yachting Association

Virgin Trains