| UK Company Name | Partial Address |
| Olapic Uk Ltd | London |
| Olbis Company Ltd. | 63/66 HATTON GARDEN, LONDON |
| Old Baker Rtm Company Limited | WARMINSTER, WILTSHIRE |
| Old Bakers Court Management Company Limited | 561 Upper Newtownards Road, Belfast |
| Old Barn Catering Limited | Markethill, Armagh |
| Old Castle Developments Ltd | Omagh, County Tyrone |
| Old Channel 21 Ltd | HOLYWOOD, COUNTY DOWN |
| Old City Trading Limited | BRISTOL |
| Old Coach House Properties Ltd | DROMORE |
| Old Court Investments Limited | 7/12 Tavistock Square, London |
| Old Hall Court (N.I.) Limited | BELFAST |
| Old Hall Court (West Midlands) Management Limited | Aldridge, Walsall |
| Old Hall Street Properties Limited | London |
| Old Ignatian Association Limited | 2 RUGBY STREET, LONDON |
| Old Library Trust -The | Londonderry, Derry |
| Old Magistrates Court Witham Management Company Limited | Colchester, Essex |
| Old Manse (Ballygally) Management Ltd | LARNE, COUNTY ANTRIM |
| Old Market Square Management Company Limited | Holywood, Co. Down |
| Old Mill Bexley Management Company Limited | Sidcup, Kent |
| Old Mill Property Management Limited | BANGOR |
| Old Oak Finance Company Limited | 50 LAMMAS STREET, CARMARTHEN |
| Old Oak Holdings Limited | 5TH FLOOR, LONDON |
| Old Oak Insurance Brokers Limited | CARMARTHEN |
| Old Oak Park Ltd | LONDON |
| Old Oven Door Ltd | 2 DUNCAIRN GARDENS, BELFAST |
| Old Park Farm Limited | OLD PARK, DEVIZES |
| Old Park Foods Limited | Portadown, Co Armagh |
| Old Railway View Management Limited | Newry |
| Old Rectory Secretarial Services Limited | WEYBRIDGE, SURREY |
| Old Road Securities Limited | Bedford, Beds |
| Old School Field Management Services Ltd -The | LIMAVADY |
| Old School House Nursery Limited | Giltbrook, Nottingham |
| Old Shore Manor Management Company No.1 Limited | CARRICKFERGUS |
| Old Thorns Golf Hotel And Country Estate Limited | 12 MARKET STREET, GLOSSOP |
| Old Thorns Limited | PURLEY |
| Old Town Hall Restaurants Limited | 8 Patriot Square, London |
| Old Town Inns Limited | HASTINGS, EAST SUSSEX |
| Old Trafford Bowling Club Limited | OLD TRAFFORD, MANCHESTER |
| Old Trafford Supporters Club Limited | 99 Sir Matt Busby Way, Manchester |
| Oldbourne & Oldbourne Hospitality Limited | 20 OLD BAILEY, LONDON |
| Oldbrier Limited | ENNISKILLEN, CO FERMANAGH |
| Oldbury Engineering Co.,Limited | SUDBURY, SUFFOLK |
| Oldbury Motors Limited | Haywards Heath, West Sussex |
| Oldbury Residential Limited | Liverpool |
| Oldchurch Services Ltd | MOUNT STREET, MANCHESTER |
| Olde World Inns Limited | ST. AUSTELL |
| Older People North-West | CHAPEL ROAD, DERRY |
| Oldfield Electrical Supplies Limited | SKIPTON, NORTH YORKSHIRE |
| Oldfield Lodge Partnership Limited | Maidenhead, Berkshire |
| Oldfield Partners Llp | London |
| Oldham Athletic (2004) Association Football Club Limited | Furtherwood Road, Oldham |
| Oldham Coliseum Theatre Limited(The) | WILMSLOW, CHESHIRE |
| Oldham Electrical Ltd | Oldham, Lancashire |
| Oldham Engineering Limited | Darnall Road, Sheffield |
| Oldie Publications Limited | 23/31 GREAT TITCHFIELD STREET, LONDON |
| Olena Consulting Limited | WAKEFIELD, WEST YORKSHIRE |
| Oleon Ltd. | Northallerton, North Yorkshire |
| Olfasense Uk Ltd | ANGLO OFFICE PARK, BRISTOL |
| Olga Tv Limited | 2 GLASS WHARF, BRISTOL |
| Oli Building Company Limited | London |
| Olimp Holdings Limited | 2 PORTMAN STREET, LONDON |
| Olimp Tour Ltd | 5TH FLOOR, LONDON |
| Olinton Investments Limited | Eastcote |
| Olive & Orange Limited | 1ST FLOOR SOUTH, LONDON |
| Olive & Sage Catering Limited | SHEFFIELD |
| Olive Business Solutions Limited | FAREHAM, HAMPSHIRE |
| Olive Group (Uk) Limited | NEW FETTER LANE, LONDON |
| Olive Holdings Limited | Edinburgh |
| Olive Media Limited | LONDON |
| Olive Media Solutions Uk Holdings Limited | London |
| Olive Properties Limited | KINGS DRIVE, PRESCOT |
| Olive Tree (Bridport) Limited | BRIDPORT, DORSET |
| Oliveira Brothers Services Ltd | WATFORD |
| Oliver Ashworth (Holdings) Limited | MILL HILL STREET, BOLTON |
| Oliver Ashworth Limited | MILL HILL STREET, BOLTON |
| Oliver Bonas Limited | CHESSINGTON, SURREY |
| Oliver Brown Limited | Mansfield |
| Oliver Corey Garages Ltd | Dunnamore, Cookstown |
| Oliver James Associates Limited | HARDMAN SQUARE, MANCHESTER |
| Oliver Kay Limited | Southport Business Park, Southport |
| Oliver Lee Trading Limited | LEEDS |
| Oliver Marketing Limited | London |
| Oliver Petroleum Ltd. | Sheffield |
| Oliver Spencer Limited | LONDON |
| Oliver Transport Services Ltd | BALLYCASTLE RD IND ESTATE, COLERAINE |
| Oliver Wyman Energy Consulting Limited | Tower Place, London |
| Oliver Wyman Limited | Tower Place, London |
| Oliver Wyman Services Limited | Tower Place, London |
| Oliver'S Fish Ltd | PRESTWICH, MANCHESTER |
| Oliver'S Travels Ltd. | 1-3 BRIXTON ROAD, LONDON |
| Olivers Property Agents Limited | HALESWORTH, SUFFOLK |
| Oliveti Construction Limited | MERIDIAN BUSINESS PARK, LEICESTER |
| Oliveto & Olivo Limited | LONDON |
| Olivetti Uk Limited | 1 THE LAKES, NORTHAMPTON |
| Olivi Mediterranean Restaurant Limited | Caterham On The Hill, Surrey |
| Olleco | NORTHAMPTON, NORTHAMPTONSHIRE |
| Olmewood Limited | SALFORD |
| Olpro Ltd | HOLT HEATH, WORCESTER |
| Olsen U.K. Limited | 3-4 Bywell Place, London |
| Olsten (U.K.) Holdings Limited | LONDON |
| Olswang Cosec Limited | 78 Cannon Street, London |
| Oltec Group Holding Ltd | HINDLEY, WIGAN |
| Oltec Group Trading Ltd | HINDLEY, WIGAN |
| Olton Golf Club,Limited(The) | SOLIHULL, BIRMINGHAM |
| Olympia Limited | KENSINGTON, LONDON |
| Olympia Tools (Uk) Limited | DARTFORD, KENT |
| Olympian Homes Limited | London |
| Olympian Investments Limited | London |
| Olympic Fixing Products Limited | HAMBRIDGE LANE, NEWBURY |
| Olympic Fixings Ireland Ltd | HAMBRIDGE LANE, NEWBURY |
| Olympic Fixings Ireland Ltd | BANGOR, CO DOWN |
| Olympic House Limited | 213 St Vincent Street, Glasgow |
| Olympic Lifts Limited | Lissue Road, Lisburn |
| Olympic Limited | Christchurch, Dorset |
| Olympic Management Limited | MORLEY, LEEDS |
| Olympus Automation Limited | Peterborough, Cambridgeshire |
| Olympus Distribution Limited | Tipton, West Midlands |
| Olympus Electrical Wholesale Limited | Swindon, Wiltshire |
| Olympus Europa Holding Se | SOUTHEND-ON-SEA, ESSEX |
| Olympus Keymed Group Limited | Stock Road, Southend-On-Sea |
| Olympus Keymed International Limited | Southend-On -Sea, Essex |
| Olympus Tiles Limited | Comberton, Cambridge |