| Progeny Wealth Limited | Leeds | A rating |
| PROGNOMICS Ltd. | Swansea | A rating |
| Program Management Services UK Limited | London | A rating |
| Program Planning Professionals Limited (Pcubed) | London | A rating |
| Programmai Limited | London | A rating |
| Progress Adult Living Services Ltd | Wolverhampton | A rating |
| Progress Housing Group | Leyland | A rating |
| Progress JJ Limited | Manchester | A rating |
| PROGRESS MOTORS | WELLINGBOROUGH | A rating |
| Progress Music Academy | Birmingham, West Midlands | A rating |
| Progress Rail Services UK Limited | Nottingham | A rating |
| Progress Schools Limited | Bootle | A rating |
| Progressive Broadcast Hire ltd | Glasgow | A rating |
| Progressive Builders Limited | London | A rating |
| Progressive Education Consultants UK Ltd T/A Mail boxes Etc. | London | A rating |
| PROGRESSIVE GROUP INTERNATIONAL LTD | Liverpool | A rating |
| Progressive IT Services LTD | London | A rating |
| Progressive Technology Limited | Newbury | A rating |
| Progressive Technology Solutions Limited | London | A rating |
| Progressive Tours Ltd | Amersham | A rating |
| Progressive UK Recruitment Ltd | Waltham Cross | A rating |
| Progroup Board Ltd | Ellesmere Port | A rating |
| Prohal Ltd | Watford | A rating |
| Prohire Software Limited | Sittingbourne | A rating |
| Proimmune Limited | Oxford | A rating |
| Proinsight Research Ltd | London | A rating |
| Projcon Group Limited | 3000 Hillswood Dr | A rating |
| Projcon Group Limited | Staines-Upon-Thames | A rating |
| Project 100 Communications Ltd | St Albans | A rating |
| Project 23rd Cenutry Ltd | London | A rating |
| Project 3 Mobility R&D UK Limited | Warwick | A rating |
| Project A Ventures Management | London | A rating |
| Project Better Energy Limited | Burton-On-Trent | A rating |
| Project Better Energy Ltd | Burton upon Trent | A rating |
| Project Business Solutions Ltd | Boldon Colliery | A rating |
| Project Care Limited | Northampton | A rating |
| Project Development International Limited | Aberdeen | A rating |
| Project Dewatering Ltd | Ipswich | A rating |
| Project Edge MidCo Limited | Colwyn Bay | A rating |
| Project Eidos Limited | Bedford | A rating |
| PROJECT ELECTRICAL SOLUTIONS LTD | sunderland | A rating |
| Project Etopia | London | A rating |
| PROJECT GLOBAL MINING LIMITED | London | A rating |
| Project Golf LTD | London | A rating |
| Project Heaven Restoration Ltd | Peterborough | A rating |
| Project Infinity Technologies Limited | London | A rating |
| Project J LTD | London | A rating |
| Project London Property Limited | London | A rating |
| PROJECT NEWCASTLE PRIVATE LIMITED TRADING AS PAPA JOHNS | HUDDERSFIELD | A rating |
| Project People Limited | Bristol | A rating |
| Project Provenance Limited | Oxford | A rating |
| Project REM Limited | Derby | A rating |
| Project Seagrass | BRIDGEND | A rating |
| Project Support Bubble Ltd | Derby | A rating |
| PROJECT TRANSFORM LTD | Brierfield | A rating |
| PROJECT TWENTY ONE LIMITED | London | A rating |
| Project X Leamington Ltd | Leamington Spa | A rating |
| Project Zeta Ltd | Aylesbury | A rating |
| Project1 UK Contracting Ltd | London | UK Expansion Worker: Provisional |
| Projecting Success Ltd | Salisbury | A rating |
| Projective Group UK Limited | London | A rating |
| Projective Limited | Fleet | A rating |
| Projects Abroad (UK) Ltd | Brighton | A rating |
| PROJECTS BULK PIPING LIMITED | ENGLAND | A rating |
| PROJECTS DG LTD | WOLVERHAMPTON | A rating |
| Projects Expert UK Limited | Watford | A rating |
| Projectus Consulting | London | A rating |
| Projekt 42 | EDINBURGH | A rating |
| Projex Cellular Infrastructure UK Limited | Bristol | A rating |
| Projex Support Ltd | Chelmsford | A rating |
| PROJUKTI TEAM LIMITED | London | A rating |
| Prokarium Limited | London | A rating |
| Prokope Consulting Ltd | Macclesfield | A rating |
| PROLABS UK LTD | GLOUCESTERSHIRE | A rating |
| Prolectric Services Limited | Clevedon | A rating |
| Prolibertas Care Solutions Limited | BURNLEY | A rating |
| Prolific Academic Ltd | London | A rating |
| Prolific Glaze Ltd. | Slough | A rating |
| Prolifics Inc | London | A rating |
| Prolifics Testing UK Limited | Borehamwood | A rating |
| Prolight Direct Limited | Rickmansworth | A rating |
| Proline Care Limited | Birmingham | A rating |
| ProLion Ltd | Cheltenham | A rating |
| PROLITE ENTERPRISES LTD | Barking | A rating |
| Proliver LTD | Liverpool | A rating |
| Prolog Fulfilment Ltd | Nottingham | A rating |
| Prologic Services Ltd | Felixstowe | A rating |
| Prologik Automation Ltd | Peterborough | A rating |
| Prologis UK Limited | Solihull | A rating |
| Prolojik Limited | High Wycombe | A rating |
| Prolynk Limited | Manchester | A rating |
| Promade Solutions Ltd | Timperley | A rating |
| Proman Power UK Ltd | London | A rating |
| Proman Recruitment limited | london | A rating |
| Proman Supply Chain Limited | Manchester | A rating |
| Promatrix Solutions Pvt Ltd | Slough | A rating |
| Promax Ventures limited | London | A rating |
| Promedica24 (Lancashire) Limited | Wolverhampton | A rating |
| Promedica24 (Lancashire) Ltd | ROSSENDALE | A rating |
| Promedica24 UK Ltd | Bury | A rating |
| PROMENTUM LIMITED | Sevenoaks | A rating |
| Promeritum Investment Management LLP | London | A rating |
| PROMET TECHNOLOGY LTD | LONDON | A rating |
| Prometeon Tyre Group UK Ltd | Burton on Trent | A rating |
| Promethean Limited | Clitheroe | A rating |
| Promethean Particles Limited | Nottingham | A rating |
| Prometheus Enterprises U.K. Limited | Leeds | A rating |
| Prometheus Industries Ltd | London | A rating |
| PROMETHEUS SECURITY AND SAFETY SOLUTIONS LTD | Harrow | A rating |
| Prometheux Limited | London | A rating |
| Promise Corporation Limited | London | A rating |
| Promise Dental services limited | peterborough | A rating |
| PROMISED CONSULTANTS LIMITED | Ilford | A rating |
| PROMISING HEALTHCARE LIMITED | Essex | A rating |
| Promittere Recruitment LTD | London | A rating |
| Promni Health Limited | Lincoln | A rating |
| PROMO FINANCE LTD | Hassocks | A rating |
| PROMORTEK LTD | Essex | A rating |
| PROMORTEK RETAILS LTD | IPSWICH | A rating |
| Promos World Limited | London | A rating |
| Promoting Independent Care Limited | Bristol | A rating |
| Promoting Youth Ltd | Harrow | A rating |
| PROMOTIZE LTD | Manchester | A rating |
| PromoVeritas Limited | Pinner | A rating |
| PROMPT CARE LIMITED | Dartford | A rating |
| Prompt Cars Limited | Reading | A rating |
| Prompt Healthcare Staffing Ltd | Basildon | A rating |
| PROMPT VEHICLE MANAGEMENT LTD | London | A rating |
| Promtek Limited | Stoke-On-Trent | A rating |
| ProMX UK Limited | Reading | A rating |
| Pronet Gaming Ltd | London | A rating |
| Pronovias UK Limited | London | A rating |
| Prontaprint | London | A rating |
| Pronto Paratha LTD | Hounslow, | A rating |
| Proof 1 Ltd | London | A rating |
| Proof Drinks Ltd | London | A rating |
| Proof London Limited | London | A rating |
| ProofID | Salford | A rating |
| Proofpoint Limited | Reading | A rating |
| Proove Holdings Limited | Ashton on Ribble | A rating |
| PROP80 LIMITED | London | A rating |
| Propack Direct Mail Ltd | Huddersfield | A rating |
| PROPACK PLUS LTD | Salford | A rating |
| Propagate Distribution Ltd | Harrow | A rating |
| Propath UK Limited | Hereford | A rating |
| Propav Infrastructure Ltd | London | A rating |
| PROPCO (P1) LTD | Northampton | A rating |
| Propdevelop Ltd. | London | A rating |
| Propel Digital | Leighton Buzzard | A rating |
| Propel Finance Plc | Newport | A rating |
| Propel Holdings Limited | Nottingham | A rating |
| PROPEL LEARNING LTD | LONDON | A rating |
| Propel Tech Ltd | Wakefield | A rating |
| Propeller Academy Trust | Wantage | A rating |
| PROPELLER COMMUNICATIONS LTD | ISLINGTON | A rating |
| Propeller PR and Content Limited | London | A rating |
| Propellerfish Ltd | London | A rating |
| Propello Cloud Ltd | Manchester | A rating |
| Propensio Finance limited | Rotherham | A rating |
| Proper Aesthetics Ltd | Milton Keynes | A rating |
| Proper Genies Ltd | London | A rating |
| Proper Home Care Ltd | Dudley | A rating |
| Proper M Ltd | London | A rating |
| PROPERTEERS GROUP LIMITED | London | A rating |
| Property & Land Surveys (Highlands) Ltd | INVERNESS | A rating |
| PROPERTY AND PROJECT MANAGEMENT COMPANY LIMITED | Nottingham | A rating |
| PROPERTY BY CAPITAL LIMITED | Chelsea | A rating |
| Property Contractors 247 | Kentish Town | A rating |
| PROPERTY DEPOT LIMITED | Ilford | A rating |
| PROPERTY DEVELOPMENT SERVICES (UK) 1 LIMITED | WORCESTER | A rating |
| Property Finders Real Estate Limited | Mayfair, London | A rating |
| PROPERTY IMPROVEMENT SERVICES LIMITED | Wolverhampton, West Midlands | A rating |
| PROPERTY INVESTMENT FOR LIFE LTD | LONDON | A rating |
| PROPERTY INVESTMENT GAINS LTD | Manchester | A rating |
| Property Legal 101 Ltd | London | A rating |
| Property Link Ilford Limited | Ilford | A rating |
| Property Links International Ltd. | London | A rating |
| Property Links UK Limited | Ilford | A rating |
| PROPERTY MAINTENANCE COMPANY (SHEPPEY) LIMITED | Sheerness | A rating |
| Property Management (North London) Limited T/A Acorn Property Group | London | A rating |
| PROPERTY MANAGEMENT CARE LTD | Southsea | A rating |
| Property Market Analysis LLP | London | A rating |
| Property Masterz UK LTD | Ilford | A rating |
| Property Options Maintenance | Bristol | A rating |
| Property Partners Management Limited | London | A rating |
| Property Partners North London Limited | London | A rating |
| PROPERTY PEOPLE INVESTMENTS LIMITED | Northwood | A rating |
| PROPERTY PLUS INVESTMENTS LIMITED | Isleworth | A rating |
| Property Portfolio (Aberdeen) Limited | Stonehaven | A rating |
| Property Service Group Ltd | London | A rating |
| Property Spot UK Limited | Ilford | A rating |
| Property Tectonics Ltd. | Pendlebury | A rating |
| Property Vission Limited | Dorset | A rating |
| PROPERTYFLOW TECHNOLOGIES LTD | London | A rating |
| PROPERTYLINK GLOBAL LTD | Harrow | A rating |
| Propertyloop Limited | London | A rating |
| ProPharma Group MIS Limited | Richmond | A rating |
| ProPharmace Limited | London | A rating |
| Propheci Ltd | Glasgow | A rating |
| Prophet Brand Strategy Limited | London | A rating |