- A L T Berg Ltd. - Richmond - DL10 4TG
- C C T V First - DL10 7JF
- Easby Electronics - DL10 4TQ
- Electrical Appliance Testing - DL10 7XW
- Eyecatching Signs - DL10 4SX
- Gilsan Sports - DL10 4HU
- Hambleton Steel - DL10 7JH
- Heron Contracting Ltd - DL10 7HB
- International Pipeline Products Ltd - DL10 7JH
- Investigator Training International - DL10 4XW
- Mason Woodchippers Ltd - DL10 6NF
- MHT Technology Ltd - DL10 5NY
- NMC Copley - DL10 7HS
- Peratech Holdco Limited - DL10 7JH
- Pipeline Engineering - DL10 7JQ
- Print Demon Systems Ltd - DL10 4TQ
- Richmond Fire Engineers Ltd - DL10 4SH
- SRS Cleaning Equipment - DL10 6SA
- SWARCO UK & Ireland Ltd - DL10 5NF
- The Fire Safety Company Ltd - DL10 7JF
- Waddington Buildings Ltd - DL10 7SH
- WF Racing - DL10 7EY
- Zetland Estates - DL10 5HJ