Westminster Business by letter: o
- O C R A Consulting, Westminster
- O Frydman, Westminster
- O J A Gilmore, Westminster
- O L I M Ltd, Westminster
- O M V (UK) Ltd, Westminster
- O T R PLC, Westminster
- O'Briens Irish Sandwich Bar, Westminster
- O'Connor Associates, Westminster
- O'Gallagher Decorating, Westminster
- O'Keefes Of Knightsbridge, Westminster
- O'Keeffe, Westminster
- O'Keeffe Solicitors, Westminster
- O'Neill, Westminster
- O'Neill & Bramwell, Westminster
- O'Neill Sports Wear, Westminster
- O'Neill's, Westminster
- O'Neill's, Westminster
- O'Neills, Westminster
- O'Neills, Westminster
- O'neills, Westminster
- O'Sole Mio, Westminster
- O'Sullivan Concept Salons, Westminster
- O'Sullivan Concepts Salon, Westminster
- O2, Westminster
- O2 Store, Westminster
- O2 Store, Westminster
- O2 Store, Westminster
- O2 Store, Westminster
- Oak Holdings, Westminster
- Oak House Hotel, Westminster
- Oakbourne Crisis Pregnancy Centre, Westminster
- Oake Textiles, Westminster
- Oakes Bacot Ltd, Westminster
- Oakham Gallery, Westminster
- Oakham Gallery, Westminster
- Oakley Capital Ltd, Westminster
- Oakley Property Services Ltd, Westminster
- Oaks Solicitors, Westminster
- Oakwood (UK), Westminster
- Oasis, Westminster
- Oasis Bars, Westminster
- Oasis Dental Care, Westminster
- Oasis Europe, Westminster
- Oasis Stores Ltd, Westminster
- Oasis Stores PLC, Westminster
- Oasis Stores PLC, Westminster
- Oasis Television, Westminster
- Oasis Television Ltd, Westminster
- Oberoi International, Westminster
- Obhrai & Son, Westminster
- Objective Performance Ltd, Westminster
- OC Building Services, Westminster
- OccAsianZ Ltd, Westminster
- Occo, Westminster
- Occupational Standards Council For Engineering, Westminster
- Ocean Advertising, Westminster
- Ocean Aviation & Logistics International Ltd, Westminster
- Ocean Bulk Carriers, Westminster
- Ocean Dry Cleaners, Westminster
- Ocean Map Travel, Westminster
- Ocean Optics, Westminster
- Ocean Organic Ltd, Westminster
- Ocean Outdoor (UK) Ltd, Westminster
- Oceanic Client Services (UK) Ltd, Westminster
- Oceanic Jewellers Ltd, Westminster
- Oceanwave Digital Ltd, Westminster
- Ocenanic Shipping & Chartering Ltd, Westminster
- Ockwell Associates, Westminster
- Octagon Developments, Westminster
- Octopus, Westminster
- Octopus, Westminster
- Octopus Asset Management, Westminster
- Octopus Communications, Westminster
- Octopus Telecom Ltd, Westminster
- Oculus, Westminster
- Oddbins Ltd, Westminster
- Oddbins Ltd, Westminster
- Oddbins Ltd, Westminster
- Oddbins Ltd, Westminster
- Oddbins Ltd, Westminster
- Oddbins Ltd, Westminster
- Oddbins Ltd, Westminster
- Oddbins Ltd, Westminster
- Oddbins Ltd, Westminster
- Oddbins Ltd, Westminster
- Oddbins Ltd, Westminster
- Oddbins Ltd, Westminster
- Odeon (West End), Westminster
- Odeon Cinema, Westminster
- Odeon Cinema, Westminster
- Odeon Cinema, Westminster
- Odeon Cinema, Westminster
- Odey Asset Management Ltd, Westminster
- Odgers Ray & Berndtson, Westminster
- Odins, Westminster
- ODT Ltd, Westminster
- OEM PLC, Westminster
- OES, Westminster
- Oeuf, Westminster
- Off Plan Property, Westminster
- Off The Kerb Productions, Westminster
- Office, Westminster
- Office, Westminster
- Office, Westminster
- Office, Westminster
- Office Angels, Westminster
- Office Angels, Westminster
- Office Angels, Westminster
- Office Angels, Westminster
- Office Angels Ltd, Westminster
- Office Concierge Co Ltd, Westminster
- Office For National Statistics, Westminster
- Office Furniture (London) Ltd, Westminster
- Office Images, Westminster
- Office Of Civil Service Commissioners, Westminster
- Office Of Science & Technology, Westminster
- Office Of The National Lottery, Westminster
- Office Planet Ltd, Westminster
- Official (UK) Charts Co, Westminster
- Offord Newsagents, Westminster
- Offshore Intelligence, Westminster
- Offspring, Westminster
- Offspring Commuinications, Westminster
- Ofgem, Westminster
- Ofsted, Westminster
- Ogden Richard Ltd, Westminster
- Ognisko Polish Club, Westminster
- Oi Bagel Ltd, Westminster
- Oil Companies International Marine Forum, Westminster
- Oil Spill Response Ltd, Westminster
- Oilspace Inc, Westminster
- Oise, Westminster
- Ok Mail, Westminster
- Okay (UK) Ltd, Westminster
- Olan Mills, Westminster
- Olax Ltd, Westminster
- Old Delhi, Westminster
- Old English Coffee House, Westminster
- Old Shades, Westminster
- Older Ladies, Westminster
- Oldfield Partners LLP, Westminster
- Oldie Publications Ltd, Westminster
- Olding R D, Westminster
- Oliver Forge & Brendan Lynch Ltd, Westminster
- Oliver Heald, Westminster
- Oliver James, Westminster
- Oliver Laws Ltd, Westminster
- Oliver Letwin, Westminster
- Oliver Pain, Westminster
- Oliver Travel Ltd, Westminster
- Oliver Wise, Westminster
- Oliver Wyman & Co, Westminster
- Olivers Wine Bar, Westminster
- Oliveto, Westminster
- Olivo, Westminster
- Ollie & Nic, Westminster
- Olsberg S P I Ltd, Westminster
- Olsen (UK) Ltd, Westminster
- Olympic Agencies (UK) Ltd, Westminster
- Olympic Airways, Westminster
- Olympic Estates Ltd, Westminster
- Olympic House, Westminster
- Olympic House Hotel, Westminster
- Olympic Press Ltd, Westminster
- OMD (Europe), Westminster
- OMDUK, Westminster
- Omega, Westminster
- Omega Environmental Technologies, Westminster
- Omiccioli, Westminster
- Omni Therapies, Westminster
- Omni-Resources Ltd, Westminster
- Omnicom Finance Ltd, Westminster
- Omnilabs (UK) Ltd, Westminster
- OMV Trading Services Ltd, Westminster
- OMYGOD, Westminster
- On Air Systems Ltd, Westminster
- On Anon, Westminster
- On Sight Ltd, Westminster
- On Time Cars, Westminster
- Onda Capital, Westminster
- One A Hair, Westminster
- One Aldwych, Westminster
- One Boy And His Cow Productions, Westminster
- One For One Ltd, Westminster
- One Great George St, Westminster
- One Leicester Square, Westminster
- One Makeup, Westminster
- One Ninety Queens Gate PLC, Westminster
- One Price Ltd, Westminster
- One Stop Community Stores Ltd, Westminster
- One Three Nine, Westminster
- One To One, Westminster
- One To One Call, Westminster
- One To One Car Service, Westminster
- One To One English, Westminster
- One Whitehall Place, Westminster
- One World Telecom, Westminster
- Ones & Zeros Ltd, Westminster
- Oneword Radio Ltd, Westminster
- Online F X Ltd, Westminster
- Onsite Systems Ltd, Westminster
- Ontro, Westminster
- Onyx (UK) Ltd, Westminster
- Onyx Decorating, Westminster
- Onyx Telecom Ltd, Westminster
- Oops, Westminster
- Open & Distance Learning Quality Council, Westminster
- Open Business Solutions Ltd, Westminster
- Open Business Systems, Westminster
- Open Creative Consultants, Westminster
- Open Learning Foundation, Westminster
- Open M R I Centre, Westminster
- Open Mike Productions, Westminster
- Open Mind Ltd, Westminster
- Open Sesame, Westminster
- Opera Gallery (London), Westminster
- Opium, Westminster
- Opta, Westminster
- Opti Media Ltd, Westminster
- Optic Asset Management, Westminster
- Optical Shop Of Aspen Europe Ltd, Westminster
- Opticare, Westminster
- Optichic, Westminster
- Optikon Optician, Westminster
- Optimad-Media Systems, Westminster
- Optimum Releasing, Westminster
- Options Group (UK) Ltd, Westminster
- Opus, Westminster
- Opus 70, Westminster
- Opus Dei, Westminster
- Opus Personnel Ltd, Westminster
- Opus Protection Services Ltd, Westminster
- Opuslegal Ltd, Westminster
- Ora, Westminster
- Oracle, Westminster
- Oracle Advertising Services Ltd, Westminster
- Oral Design (London), Westminster
- Oral Hygiene Centre, Westminster
- Oral Illusion, Westminster
- Orang-Utan Ltd, Westminster
- Orange, Westminster
- Orange 20, Westminster
- Orange Advertising Ltd, Westminster
- Orange Personal Communication, Westminster
- Orange PLC, Westminster
- Orange Retail, Westminster
- Orange Retail, Westminster
- Orange Street Congregational Church, Westminster
- Orbach Design, Westminster
- Orbis Investment Advisory Ltd, Westminster
- Orbit Media, Westminster
- Orbit Property Managemnet Ltd, Westminster
- Orbital Media Ltd, Westminster
- Orbys Consulting Ltd, Westminster
- Orchard Fruits, Westminster
- Orchard Hotel, Westminster
- Orchestra Of The Age Of Enlightenment, Westminster
- Oresund Consultancy, Westminster
- Orexis, Westminster
- Oriel Resources PLC, Westminster
- Oriental & African Strategic Investment Services Ltd, Westminster
- Oriental 77, Westminster
- Oriental Club, Westminster
- Oriental Rugs Ltd, Westminster
- Oriental Trading Co, Westminster
- Original Tagines, Westminster
- Orion, Westminster
- Orion Capital Managers (UK) Ltd, Westminster
- Orion I T Ltd, Westminster
- Orion Land & Leisure Ltd, Westminster
- Orion Publishing Group Ltd, Westminster
- Orlando Hamilton Flowers, Westminster
- Ormonde House, Westminster
- Ormonde Jayne, Westminster
- Orrery Restaurant, Westminster
- Orrery Restaurant Ltd, Westminster
- Orsini, Westminster
- Orso Restaurants Ltd, Westminster
- Orvis Co Inc, Westminster
- Osaka Gas Co Ltd, Westminster
- Osborne Richardson Consultants, Westminster
- Osborne Samuel, Westminster
- Osborne Studio Gallery, Westminster
- Oscar Fairchild Ltd, Westminster
- Oscar Jacobson (UK) Ltd, Westminster
- Oscar Milow, Westminster
- Osel Architecture, Westminster
- Osel Architecture Ltd, Westminster
- Oserrano, Westminster
- Osiris, Westminster
- Oslo Court Garage Ltd, Westminster
- Oslo Court Properties Ltd, Westminster
- Oslo Court Restaurant, Westminster
- Osprey, Westminster
- Osprey Clarke, Westminster
- Ossowski, Westminster
- Osteopathic Association Clinic, Westminster
- Osteoporosis Screening Centre, Westminster
- OTA Resources Development, Westminster
- OTM Brand, Westminster
- Ottoemezzo Italian Delicatessen, Westminster
- Otway Norwood, Westminster
- Otylia Roberts, Westminster
- Ouberge, Westminster
- Oui Group, Westminster
- Oui Group (UK) Ltd, Westminster
- Our Lady & St Vincents R C Church, Westminster
- Our Lady Of Dolours R C School, Westminster
- Our Lady Of The Assumption & St Gregory R C Church, Westminster
- Our Vision Ltd, Westminster
- Out & Out-Gay, Westminster
- Out Of The Blue Productions, Westminster
- Outdoor Advertising Association, Westminster
- Outfit, Westminster
- Outlaw Films Ltd, Westminster
- Outlet 4 Holidays, Westminster
- Outlet Holidays, Westminster
- Outsider Ltd, Westminster
- Outsorcery Creative Services Ltd, Westminster
- Ovag Ltd, Westminster
- Ovation Incentive, Westminster
- Overseas Development Corporation Ltd, Westminster
- Overseas Exhibition Services Ltd, Westminster
- Overseas Link Ltd, Westminster
- Overseas Management Co (UK) Ltd, Westminster
- Overseas Trade Shows Agencies Ltd, Westminster
- Owen Garside, Westminster
- Owen Hill, Westminster
- Owen Luder, Westminster
- Owen Marshall, Westminster
- Owen Patterson, Westminster
- Owen Thomas, Westminster
- Owens Garside, Westminster
- Ownhill Ltd, Westminster
- Oxbow Carbon & Minerals (UK) Ltd, Westminster
- Oxfam, Westminster
- Oxfam, Westminster
- Oxfam, Westminster
- Oxfam, Westminster
- Oxfam, Westminster
- Oxfam, Westminster
- Oxfam, Westminster
- Oxford & Cambridge Club, Westminster
- Oxford & Cambridge University Club, Westminster
- Oxford Hotel, Westminster
- Oxford House, Westminster
- Oxford House College, Westminster
- Oxford House Group, Westminster
- Oxford House Hotel, Westminster
- Oxford News, Westminster
- Oxford News Ltd, Westminster
- Oxford Stage Co, Westminster
- Oxford University Press, Westminster
- Oxford Vehicle Leasing Ltd, Westminster
- Oxfords, Westminster
- Oxigen, Westminster
- Oxus Gold PLC, Westminster
- Oxygen, Westminster
- Oxygen Executive Search, Westminster
- Oxygen Model Management, Westminster
- Oxymoron Films Ltd, Westminster
- Oyster Investments, Westminster
- Oz Flights, Westminster
- Ozer Restaurant, Westminster
- Ozseeker, Westminster
- Ozwald Boateng, Westminster
- Ozwald Boateng, Westminster
- Ozzis Hair Studio, Westminster