Classées par nom. Les sociétés mères de groupe sont signalées.
| AO RECYCLING LIMITED | BOLTON |
| AO RETAIL LIMITED | BOLTON |
| AO WORLD PLC société mère de groupe | BOLTON |
| AOE Windfarm Limited | Aberdeen |
| AON GLOBAL HOLDINGS PLC | London |
| AON GLOBAL LIMITED société mère de groupe | London |
| AON LIFE SOLUTIONS LIMITED | London |
| AON OVERSEAS HOLDINGS LIMITED | London |
| AON UK HOLDINGS LIMITED | London |
| AON UK LIMITED | London |
| AONGHUSA LIMITED expiré | INVERNESS |
| AOSPHERE LIMITED | London |
| Aozora Europe Limited | London |
| APAC HOLDCO LIMITED | LONDON |
| APACHE NORTH SEA LIMITED | London |
| APAM LTD | MANCHESTER |
| APAX PARTNERS LLP société mère de groupe | LONDON |
| APAX PARTNERS WORLDWIDE HOLDINGS LTD | LONDON |
| APERIDATA LTD | Welwyn Garden City |
| APERTURE INVESTORS UK, LTD | London |
| APETITO LIMITED | TROWBRIDGE |
| APEX TOWER LIMITED expiré | LONDON |
| APHELION EFX TRADING LIMITED | LONDON |
| API GROUP PLC expiré | STOCKPORT |
| APOLLO ACCESS HOLDINGS LTD | BARNSLEY |
| APOLLO CRADLES LIMITED | Barnsley |
| APOLLO GROUP HOLDINGS LIMITED | London |
| APOLLO INVESTMENT MANAGEMENT EUROPE LLP | London |
| APOLLO MANAGEMENT INTERNATIONAL LLP | London |
| APOLLO NOMINEES LTD. | London |
| APOLLO SYNDICATE MANAGEMENT LIMITED | London |
| APPDYNAMICS INTERNATIONAL LTD | Feltham |
| Appen (UK) Limited | Slough |
| APPIAN EUROPE LIMITED | London |
| APPLE (UK) LIMITED | London |
| APPLEDORE SHIPBUILDERS (2004) LIMITED expiré | PLYMOUTH |
| APPLIANCES ONLINE LTD | BOLTON |
| APQ PARTNERS LLP | LONDON |
| APRIL MORTGAGES LIMITED | LONDON |
| APRILGRANGE LIMITED | London |
| APRIROSE LIMITED | LONDON |
| APS PRODUCE LIMITED | Chichester |
| APTAR UK LIMITED | Leeds |
| APTARGROUP UK HOLDINGS LIMITED | Leeds |
| Apterra Infrastructure Capital Funding Europe 2 Limited | London |
| APUS BIDCO LIMITED | ALTRINCHAM |
| AQA EDUCATION expiré | MANCHESTER |
| AQUABIO LIMITED | Worcester |
| AQUALISA HOLDINGS (INTERNATIONAL) LIMITED expiré | WESTERHAM |
| AQUALISA PRODUCTS LIMITED expiré | Kent |
| AQUASPERSIONS LIMITED | West Yorkshire |
| AQUASUN INVESTMENTS LIMITED | LEEDS |
| AQUILA LAND HOLDINGS LIMITED | KETTERING |
| AQUILA TM LIMITED | KETTERING |
| AQUILAHEYWOOD LIMITED | Altrincham |
| AQUILUS LIMITED expiré | LONDON |
| AQUIS EXCHANGE LIMITED | LONDON |
| AQUIS STOCK EXCHANGE LIMITED | LONDON |
| ARAB BANK EUROPE PLC | LONDON |
| ARACHNE BIDCO (UK) LIMITED | WEST MALLING, KENT |
| ARACHNE HOLDCO (UK) LIMITED société mère de groupe | West Malling |
| ARAG PLC expiré | Bristol |
| ARAMCO TRADING LIMITED | LONDON |
| ARBELOS ENERGY LIMITED | London |
| ARBUTHNOT BANKING GROUP PLC | LONDON |
| ARBUTHNOT LATHAM & CO., LIMITED | LONDON |
| ARC CONNECT LIMITED | LONDON |
| ARC CONNECT SOLUTIONS LIMITED | LONDON |
| ARC TIME FREEHOLD INCOME AUTHORISED FUND | LONDON |
| ARC TIME PROPERTY INCOME FEEDER TRUST | LONDON |
| ARC TIME PROPERTY INCOME PAIF | LONDON |
| ARC TIME SOCIAL PROPERTY FEEDER TRUST | LONDON |
| ARC TIME SOCIAL PROPERTY FUND | LONDON |
| ARC TIME UK INFRASTRUCTURE INCOME FUND II | LONDON |
| ARC TIME: TRUSTS II société mère de groupe | LONDON |
| ARC TIME:FUNDS société mère de groupe | LONDON |
| ARC TIME:FUNDS - ARC TIME UK INFRASTRUCTURE INCOME FUND expiré | LONDON |
| ARC TIME:FUNDS - COMMERCIAL FREEHOLD FUND expiré | LONDON |
| ARC TIME:FUNDS II société mère de groupe | LONDON |
| ARC TIME:FUNDS III | LONDON |
| ARCA BIDCO LIMITED | PORTSMOUTH |
| ARCA SHIPPING LIMITED expiré | PORTSMOUTH |
| ARCADIA GROUP LIMITED expiré | LONDON |
| ARCADIS CONSULTING (UK) LIMITED expiré | LONDON |
| Arcapita Investment Advisors UK Limited | London |
| ARCELORMITTAL KENT WIRE LIMITED expiré | CHATHAM |
| ARCH INSURANCE (UK) LIMITED | LONDON |
| ARCH MANAGING AGENCY LIMITED | LONDON |
| ARCH TIMBER PROTECTION LIMITED | MANCHESTER |
| ARCH UK BIOCIDES LIMITED | MANCHESTER |
| Archax Capital Ltd | London |
| ARCHAX GROUP LTD société mère de groupe | London |
| Archax Ltd | London |
| Archax Markets Ltd | London |
| Archax Nominees Ltd | London |
| ARCHAX VENTURES LTD | London |
| ARCHER ASSETS UK LIMITED | Eastleigh |
| ARCHER DANIELS MIDLAND (UK) LIMITED | London |
| ARCHER DANIELS MIDLAND ERITH LIMITED | London |
| ARCHER PICCADILLY LIMITED expiré | GLASGOW |
| ARCHITAS ADVISORY SERVICES LIMITED expiré | LONDON |
| ARCHITAS LIMITED | LONDON |
| ARCONIC MANUFACTURING (GB) LIMITED | BIRMINGHAM |
| ARCONTECH GROUP PLC | LONDON |
| ARCONTECH LIMITED | LONDON |
| ARDEA INVESTMENT MANAGEMENT (UK) LIMITED | London |
| ARDEN PARTNERS EBT LIMITED expiré | BIRMINGHAM |
| ARDEN PARTNERS PLC société mère de groupe expiré | ENGLAND |
| ARDEN WEALTH MANAGEMENT LIMITED expiré | BIRMINGHAM |
| ARDIAN INVESTMENT UK LIMITED | London |
| ARDINGLY COLLEGE LIMITED expiré | HAYWARDS HEATH |
| ARDO UK LIMITED expiré | ASHFORD |
| ARDONAGH MIDCO 2 LIMITED société mère de groupe | London |
| ARGENT ENERGY (UK) LIMITED expiré | MOTHERWELL |
| ARGENT ENERGY LIMITED | London |
| ARGENT FOODS LIMITED | HENLEY ON THAMES |
| ARGENTA HOLDINGS LIMITED | London |
| ARGENTA SYNDICATE MANAGEMENT LIMITED | LONDON |
| ARGENTEX GROUP PLC société mère de groupe expiré | London |
| ARGENTEX LLP expiré | London |
| ARGENTIS FINANCIAL PLANNING LTD | WATERLOOVILLE |
| ARGENTIS GROUP LTD expiré | WATERLOOVILLE |
| ARGENTIS WEALTH MANAGEMENT LTD | WATERLOOVILLE |
| ARGO CAPITAL MANAGEMENT LIMITED | LONDON |
| ARGO INTERNATIONAL HOLDINGS LIMITED expiré | LONDON |
| ARGOS LIMITED | LONDON |
| ARIAN FINANCIAL LLP expiré | London |
| ARIAT EUROPE LIMITED | Didcot |
| ARIEL CORPORATE MEMBER (NO 1345) LIMITED | LONDON |
| ARIEL RE CAPITAL HOLDINGS (NO 1345) LIMITED | LONDON |
| ARISTOCRAT TECHNOLOGIES EUROPE (HOLDINGS) LIMITED | London |
| Arix Bioscience Holdings Limited expiré | London |
| ARIX BIOSCIENCE PLC expiré | London |
| ARK INVEST INTERNATIONAL LTD expiré | Bristol |
| ARKLE FINANCE LIMITED | WELLINGBOROUGH |
| ARLA FOODS PENSION PLAN TRUSTEES LIMITED | LEEDS |
| ARLA FOODS UK PLC | Leeds |
| ARLEIGH INTERNATIONAL LIMITED expiré | READING |
| ARM HOLDINGS PLC | CAMBRIDGE |
| ARM LIMITED | CAMBRIDGE |
| ARM TECHNOLOGY INVESTMENTS 2 LIMITED | CAMBRIDGE |
| ARMILLARY BIDCO LIMITED expiré | London |
| ARNO UTG LIMITED | LONDON |
| ARNOLD CLARK AUTOMOBILES LIMITED | GLASGOW |
| ARP LATAM HOLDCO LTD | BRISTOL |
| ARP NORTH AMERICA HOLDCO LTD | BRISTOL |
| ARQIVA FINANCING NO 1 LIMITED | WINCHESTER |
| ARQIVA FINANCING NO 2 LIMITED | WINCHESTER |
| ARQIVA FINANCING PLC | WINCHESTER |
| ARQIVA GROUP LIMITED société mère de groupe expiré | HAMPSHIRE |
| ARQIVA SENIOR FINANCE LIMITED expiré | WINCHESTER |
| ARQIVA SMART FINANCING LIMITED | WINCHESTER |
| ARRAN ISLE HOLDINGS LIMITED expiré | BRADFORD |
| ARRAN ISLE LIMITED société mère de groupe expiré | ELLAND |
| ARRANDENE MFG LIMITED | St Albans, Herts |
| ARRIS GLOBAL LTD. expiré | LONDON |
| ARRIS INTERNATIONAL LIMITED expiré | LONDON |
| ARRIVA BUS & COACH LIMITED expiré | Park, Sunderland |
| ARRIVA CYMRU LIMITED expiré | Sunderland |
| ARRIVA DURHAM COUNTY LIMITED expiré | Park, Sunderland |
| ARRIVA INTERNATIONAL LIMITED expiré | Park, Sunderland |
| ARRIVA KENT & SURREY LIMITED expiré | Sunderland |
| ARRIVA KENT THAMESIDE LIMITED expiré | Sunderland |
| ARRIVA LONDON NORTH LIMITED expiré | Park, Sunderland |
| ARRIVA LONDON SOUTH LIMITED expiré | Park, Sunderland |
| ARRIVA MERSEYSIDE LIMITED expiré | Sunderland |
| ARRIVA MIDLANDS LIMITED expiré | Sunderland |
| ARRIVA MIDLANDS NORTH LIMITED expiré | Park, Sunderland |
| ARRIVA NORTH WEST LIMITED expiré | Sunderland |
| ARRIVA NORTHUMBRIA LIMITED expiré | Sunderland |
| ARRIVA PASSENGER SERVICES PENSION TRUSTEES LIMITED | SUNDERLAND |
| ARRIVA RAIL LONDON LIMITED expiré | Park Sunderland |
| ARRIVA RAIL NORTH LIMITED expiré | Park, Sunderland |
| ARRIVA THE SHIRES LIMITED expiré | Park, Sunderland |
| ARRIVA TRAINS WALES/TRENAU ARRIVA CYMRU LIMITED expiré | Sunderland |
| ARRIVA TRANSPORT SOLUTIONS LIMITED expiré | Sunderland |
| ARRIVA TREASURY COMPANY LIMITED | SUNDERLAND |
| ARRIVA UK BUS HOLDINGS LIMITED expiré | Sunderland |
| ARRIVA UK BUS INVESTMENTS LIMITED expiré | Sunderland |
| ARRIVA UK BUS LIMITED expiré | Park, Sunderland |
| ARRIVA UK TRAINS LIMITED expiré | Park Sunderland |
| ARRIVA YORKSHIRE LIMITED expiré | Park, Sunderland |
| Arrival Limited expiré | London |
| ARROW ELECTRONICS (UK) LIMITED | Harlow |
| ARROW ENTERPRISE COMPUTING SOLUTIONS LIMITED | Harrogate |
| ARROW GLOBAL GROUP PLC expiré | MANCHESTER |
| ARROW MORTGAGE FINANCE NO.1 LIMITED | LONDON |
| ARSENAL HOLDINGS PLC société mère de groupe expiré | LONDON |
| ARSENAL SECURITIES PLC expiré | LONDON |
| ARTEFACT UK LTD | LONDON |
| ARTEMIS INVESTMENT MANAGEMENT LLP | London |
| ARTERIAL VASCULAR ENGINEERING UK LIMITED | Watford |
| ARTESIAN (UK) LIMITED | KINGSTON UPON THAMES |
| ARTESIAN CAPITAL MANAGEMENT (UK) LLP | KINGSTON UPON THAMES |
| ARTHUR HOUSE (NO 6) LIMITED | LONDON |
| ARTIS FINANCE LIMITED expiré | London |
| ARTIS LOANCO 1 PLC | Manchester |
| ARTSANA U.K. LIMITED expiré | LONDON |
| ARUNVILL GLOBAL EQUITY TRADING LIMITED expiré | LONDON |
| ARUP GROUP LIMITED expiré | London |