- London Borough of Bromley
- London Borough of Croydon
- London Borough of Hillingdon
- London Borough of Enfield
- London Borough of Southwark
- London Borough of Waltham Forest
- Three Rivers District Council
- Hertfordshire County Council
- Hertsmere Borough Council
- Shenley Parish Council
- Hart District Council
- National Trust
- Forestry Commission
- Woodland Trust
- Husqvarna
- Deep Blue Productions Ltd
- The Box Moor Trust
- Scouts UK
- Girl Guiding UK
- London Play
- Bear Nibbles
- Vita Coco
- Gristwood and Toms Ltd
- Land Use Consultants Ltd
- Sibmar Construction Group
- Hudson De Maeijer Landscape and Garden Design
- Chigwell School, Essex
- Coxlease School, Lyndhurst
- Wallands CP school, Lewes
- The Willows School, Milton Keynes
- St David's College, West Wickham
- Court Wood Primary School, Croydon
- Hormead C of E Primary, Hertfordshire
- Capel Manor College, Enfield
- St Helens School, Northwood
- Oaklands College, St Albans
- Witham Hall School, Lincs
- Mayespark Primary School, Essex