Company Index
- O Rings Ltd. - Chichester
- O T R Tyres Ltd. - Alfreton
- Oadby Plastics Ltd - Warrington
- Oak Tree Engineering - West Bromwich
- Oaklands Plastics Ltd - Coleshill
- Oasis Leisure Products Ltd. - Doncaster
- OEM Lubricants Ltd - Otley
- Ogle Models & Prototypes Ltd. - Letchworth
- OKW Enclosures Ltd - Fareham
- Oldbury Plastics Ltd. - Tonbridge
- Oleotec Ltd - Ellesmere Port
- Omega Plastics - Blyth
- Omnikote Ltd - Aylesbury
- Oms (Uk) Ltd. - Stockport
- On Course Matting Ltd. - Ellesmere
- One Stop Plastics - Melton Mowbray
- Opella Ltd - Hereford
- Optical Coating Technologies Ltd - Tamworth
- Opticron - Gillingham
- Orapi Ltd. - Bradford
- Organic Specialities (A division of Thomas Swan and Co Ltd) - Leicester
- Osmor Products Ltd - Hassocks
- Osprey Ltd - Church Stretton
- Osprey Ltd - Scarborough
- Outsourcing and Manufacturing Solutions Ltd - Tamworth
- Oversolve Ltd. - Nottingham
- Owen Greenings & Mumford Ltd. - Witney
- Owen Mumford Ltd - Chipping Norton
- Owen Mumford Ltd - Oxford
- Oxford Plastics Systems Ltd - Chipping Norton
- Oxplas Ltd - Princes Risborough

