- O S Comms - 21-27 Hollands Road, Haverhill, Suffolk, CB9 8PU
- O S F Ltd - Unit 6 Four Ashes Industrial Estate, Station Road, Wolverhampton, West Midlands, WV10 7DB
- O S G UK Ltd - Shelton House 5 Bentalls, Basildon, Essex, SS14 3BY
- O S S Electrical Controls Ltd - 36 Bar Gap Road, Oldham, Lancashire, OL1 3RL
- O S S Security Specialists - Security House, 32a Bridge Road, Liverpool, Merseyside, L18 5EG
- O S X - 10 Pinchin Street, London, Greater London, E1 1SA
- O T B Engineering - 46 Loman Street, London, Greater London, SE1 0EH
- O T E - Unit 3 Quadrillion Estate, Westmead Industrial Estate, Swindon, Wiltshire, SN5 7UL
- O T E A C - Unit 4c, The Core Business Park, Aberdeen, Aberdeenshire, AB23 8BD
- O T G Precision Engineering Ltd - Maidstone Road, Sevenoaks, Kent, TN15 8JE
- O T M Servo Mechanism Ltd - The Avenue, Egham, Surrey, TW20 9AL
- O T S N W Ltd - Glaslyn, Ruthin, Clywd, LL15 1EP
- O U I Ltd - 3b Crown Terrace, Aberdeen, Aberdeenshire, AB11 6HE
- O X T S - 30 Bankside, Kidlington, Oxfordshire, OX5 1JE
- O.R.P Surveillance - Church Lodge, Welshpool, Powys, SY21 8HL
Companies 31 to 45 | Page 3 of 63