- Annodata - WD4 8SE
- B. Garrad Ltd - WD4 8HW
- C and S Ltd - WD4 8FR
- Chiswell Leisure Ltd - WD4 8AL
- Cosmographics Ltd - WD4 8LQ
- Cross Graphics Ltd - WD4 8SZ
- EWB Solutions Ltd - WD4 8GW
- Filmtek Ltd - WD4 8LZ
- Flame Ltd - WD4 8ST
- Flexelec - WD4 8ST
- G P S Document Management - WD4 8EA
- I P S Fencing - WD4 8NJ
- Imagination Technologies Ltd - WD4 8LZ
- J.V.Price Ltd Cladding Cleaning - WD4 9LH
- JK Engineering Holdings Ltd - WD4 8JJ
- Langley Labels Ltd - WD4 8JJ
- Manufacturers Supplies Acton Ltd - WD4 8JE
- Marlowe Digital - Marlowe Graphic Services - Kings Langley - WD4 8FR
- Martor UK Ltd - WD4 8LQ
- Oliver Buggy Hire - WD4 8LW
- P R International Ltd - WD4 8GW
- Pure - WD4 8LZ
- Renewable Energy Systems - WD4 8LR
- Safer Life - WD4 8LQ
- Separ Distribution (UK) - WD4 8GW
- Spectrum Electrical Solutions UK Ltd - WD4 9LH
- Squad Security - WD4 8ST
- Studiorip - WD4 8FR
- WJ Groundwater Ltd - WD4 8FR