- ASDA Stores (I)
- Barnet Furniture Centre (charity)
- Barnet Homes (LB Barnet)
- Brent Centre (charity)
- Brymor
- Crystal Hotels
- Homes for Haringey (LB Haringey)
- Icknield School Luton
- Kier/Harlow CC (I)
- Lakehouse
- Lawtech
- London Borough of Camden
- London Borough of Enfield
- London Borough of Newham
- London Borough of Southwark (I)
- Mitie
- North London Hospice (charity)
- OHS
- Parc Properties
- Pellings
- Royal Borough of Kingston
- Royal Cornwall Hospitals
- Royal Surrey County Hospital
- Rydon (Maintenance) - LB Newham, LB Lewisham, LB Lambeth
- Salvation Army Housing Association
- Spring Health
- St Joseph's Infant School Hendon
- Sutton Housing Partnership
- Tesco (I)
- Travel Lodge (I)
- Vinci
- West London Mental Health Trust
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