- London Borough of Camden
- London Borough of Hammersmith & Fulham
- London Borough of Lambeth
- London Borough of Waltham Forest
- Acceptance Co Ltd
- Ascham Homes
- Ashbourne Estates
- Carden & Godfrey
- Cartier
- Cadogan Estates
- Cognita
- Crabtree
- East Thames Housing Association
- Farley & Co
- Freshwater Group of Companies
- Howard de Walden Estates
- National Trust
- UCL Hospitals NHS Foundation Trust
- Portman Estates
- Rendell & Rittner
