| RESIDENTIAL CARE SERVICES LIMITED t/a Franklyn Lodge | Wembley | A rating |
| Residenza Properties Ltd | London | A rating |
| ResilienC Limited | London | A rating |
| Resilience First Limited | London | A rating |
| Resilience Personnel Ltd | Potters Bar | A rating |
| Resilience Residential Services Ltd | Cheadle | A rating |
| Resilient Ballistics Limited | Market Rasen | A rating |
| Resilient Healthcare Limited | Northfleet | A rating |
| Resilient Plc | London | A rating |
| Resilient Water Accelerator Limited | London | A rating |
| Resilinc UK Ltd | Burnham | A rating |
| Resillion UK Limited | Bristol | A rating |
| Resin Products Ltd | Lichfield | A rating |
| RESINEX UK LIMITED | BUCKINGHAMSHIRE | A rating |
| Resistant AI Limited | Warwick | A rating |
| Resman Wireless Reservoir Surveillance UK Ltd | Westhill | A rating |
| ResMed (UK) Limited | Didcot | A rating |
| Reso Ltd t/a QDOS | Worplesdon | A rating |
| Resodyn Europe Limited | Aylesbury | A rating |
| ResoLex (Holdings) Limited | London | A rating |
| Resolut Shareholder Services Ltd | London | A rating |
| Resolute Corporate Services UK Limited | London | A rating |
| Resolute Legal Limited | Blackpool | A rating |
| Resolute Management Limited | London | A rating |
| RESOLUTE PHOENIX LIMITED | Birmingham | A rating |
| Resolute Photonics UK Ltd | Glasgow | A rating |
| RESOLUTION CARE LTD | STOKE ON TRENT | A rating |
| Resolution Care Services Ltd | Pyle | A rating |
| Resolution Life Group Services Ltd | London | A rating |
| Resolution Property IM LLP | London | A rating |
| Resolution Therapeutics Ltd | Edinburgh | A rating |
| Resolve (Care Northern) Limited | BISHOP AUCKLAND | A rating |
| Resolve Bioenergy Ltd | Cardiff | A rating |
| RESOLVE Collective | Croydon | A rating |
| Resolve Education Ltd | Oldham | A rating |
| Resolve Salvage & Fire (Europe) Limited | London | A rating |
| Resolve Solicitors Ltd | Nelson | A rating |
| RESOLVE TECH LIMITED | Brighton | A rating |
| Resonance Global Ltd | London | A rating |
| Resonate Group Limited | Derby | A rating |
| Resonate Interiors Limited | Surbiton | A rating |
| Resonates SLM Ltd | Newbury | A rating |
| Resonics Ltd | London | A rating |
| Resort Marketing International Limited | Witham | A rating |
| Resound Ltd | Aylesbury | A rating |
| Resource Data Management LTD | Glasgow | A rating |
| Resource Experts Ltd | Uxbridge | A rating |
| Resource Finder Recruitment Ltd | Hull | A rating |
| Resource Futures Ltd | Bristol | A rating |
| Resource Gate Ltd | Luton | A rating |
| Resource Guru Limited | London | A rating |
| Resource Limited | Cardiff | A rating |
| ResourceiT Consulting Ltd | Basingstoke | A rating |
| RESOURCER LTD | Southampton | A rating |
| Resources Connection (UK) Limited | London | A rating |
| RESOURCEWISE CONSULTANCY LTD | WATFORD | A rating |
| Resourcia Ltd | CHeadle | A rating |
| RESOURZ GROUP LTD | Romford | A rating |
| Respect Care Services Limited | London | A rating |
| Respectful Care Nottingham South | Nottingham | A rating |
| Respina Limited | Bournemouth | A rating |
| Respira International | London | A rating |
| Respirex International Limited | Redhill | A rating |
| Respoke Limited | London | A rating |
| RESPOND CONSTRUCTION LTD | PORT TALBOT | A rating |
| Respond Services Ltd | Chelmsford | A rating |
| Response Designs Ltd | Blackburn | A rating |
| Response EPR LTD | Peterborough | A rating |
| Response IT Services Ltd | GUILDFORD | A rating |
| Response Physiotherapy Limited | Nottingahm | A rating |
| Response Recruitment Ltd | Park Royal | A rating |
| RESPONSE UK GROUP LIMITED | Peterborough, | A rating |
| Response24 Ltd | Reading | A rating |
| Response360 Ltd | London | A rating |
| Responsible Home Carers Limited | London | A rating |
| Responsible Leadership Foundation Limited t/a Forward Institute | London | A rating |
| Responsible Power Systems Limited | Stirling | A rating |
| Responsive Care Group Ltd | Newark | A rating |
| ResQ Limited | Hull | A rating |
| Resso Holdings Limited | Harrow | A rating |
| Resst Construction Ltd. | Middlesex | A rating |
| Rest Assured Homecare UK Limited | Wisbech | A rating |
| Resta Coffee Ltd | London | A rating |
| Restalrig Village Shop Ltd | Edinburgh | A rating |
| RESTAN UK LTD | Basildon | A rating |
| Restassured Residential Ltd | Uttoxeter | A rating |
| Restaurant Andrew Fairlie | Auchterarder | A rating |
| Restaurant MW Ltd | Edinburgh | A rating |
| RESTAURANT OLD BROMPTON LTD | LONDON | A rating |
| RESTAURANT OLD COMPTON LTD | ESSEX | A rating |
| Restaurant Sat Bains Ltd | Nottingham | A rating |
| Restaurant Services Ltd t/a Raj | High Wycombe | A rating |
| Restaurant Solutions Ltd | Milton Keynes | A rating |
| RESTAURANT STORY | LONDON | A rating |
| Restaurant Twenty Two | Cambridge | A rating |
| Restaurante Sergio Ltd | Chester | A rating |
| RESTCARE LIMITED | Harlow | A rating |
| Restek-UK Limited | Ripley | A rating |
| Restful Homes Group Ltd | Stonnall | A rating |
| Resthaven Nursing Home | Gloucestershire | A rating |
| Restless Development | London | A rating |
| Restly LTD | London | A rating |
| RESTORATION CHAPEL INTERNATIONAL | LONDON | A rating |
| Restoration Ministries UK | London | A rating |
| Restoration Revival Fellowship Luton | Luton | A rating |
| RESTORATION WORLD REVIVAL CHURCH | CROYDON, | A rating |
| Restorative Justice For All International Institute CIC | London | A rating |
| RESTORE | Barnt Green | A rating |
| Restore Community Church | Woodford Green | A rating |
| Restore Dental Group | Cardiff | A rating |
| Restore Technology Ltd | Cardington | A rating |
| Restore7 Ltd | Leeds | A rating |
| Restorehairclinics Limited | London | A rating |
| Restorer Motors Ltd | London | A rating |
| Restoring Health Limited | Maidstone | A rating |
| Restoring Lives Limited | Dagenham | A rating |
| Restrata Solutions Limited | Aberdeen | A rating |
| Restrata Solutions Ltd | Aberdeen | A rating |
| Restronauts Inc. Limited | London | A rating |
| RESTWYN LTD | Dewsbury | A rating |
| RESU IT SOLUTIONS LTD | Cardiff | A rating |
| RESUL'S FOOD & WINE LIMITED | Woodford Green | A rating |
| Resultance UK Limited | London | A rating |
| Resulting Limited | Warrington | A rating |
| Results Base Ltd | Milton Keynes | A rating |
| Results Consortium Ltd t/a Results | Dagenham | A rating |
| Results CX | London | A rating |
| RESULTS EDUCATION | London | A rating |
| Results for Development Ltd | London | A rating |
| Resurgence Urban Resilience Impact LTD | London | A rating |
| Resurgo Trust | London | A rating |
| Resurrect Bio Ltd | London | A rating |
| RESURRECTION POWER AND LIVING BREAD MINISTRIES BIRMINGHAM | West Bromwich | A rating |
| RESV Enterprise Ltd t/a Woburn Sands Convenience Store | Milton Keynes | A rating |
| Retail & Financial Services Limited | Basingstoke | A rating |
| Retail Assist Ltd | Nottingham | A rating |
| RETAIL BRISTOL LIMITED T/A BACKWELL STORES & POST OFFICE | BRISTOL | A rating |
| Retail Capital (UK) Ltd | London | A rating |
| Retail Economics Ltd | Bromley | A rating |
| Retail Edge Ltd | Barnet | A rating |
| Retail Finance Intelligence Ltd | London | A rating |
| Retail Gazette Limited | London | A rating |
| Retail Insight Ltd. | Richmond | A rating |
| Retail Inspector International Limited T/A Perfumery & Co | Lymington | A rating |
| Retail Marketing International Ltd | London | A rating |
| Retail Merchandising Services Ltd | Cardiff | A rating |
| RETAIL PLUS LIMITED | Glasgow | A rating |
| Retail Profiling Consultants Ltd | Richmond | A rating |
| RETAIL PROPERTY HQ LTD | Manchester | A rating |
| Retail Response | Wetherby | A rating |
| Retail Sales Solutions (Scotland) Ltd. | Paisley | A rating |
| RETAIL SOURCE LTD CHESTER LTD | Southport | A rating |
| RETAIL TECHNOLOGY LTD | Belvedere | A rating |
| Retail Trust | Derby | A rating |
| Retail24 Wimbledon Ltd | Wimbledon | A rating |
| Retailigence Ltd | London | A rating |
| Retailing Enterprises UK Limited trading as Invicta Stores | Wembley | A rating |
| Retailmenot UK Limited | London | A rating |
| RETAILNEXT BVI UK LTD | MILTON KEYNES | A rating |
| RETAILOGIC UK LIMITED (15113182) | LONDON | A rating |
| RETAILPHARMA ONLINE LTD | LONDON | A rating |
| Retails Computer Solutions Ltd | Leeds | A rating |
| retailsolutions AG (UK) Limited | Oxhey | A rating |
| Retailverse Limited | London | A rating |
| Retain Healthcare | Cheltenham | A rating |
| Retalia Solutions Ltd | Altrincham | A rating |
| RETARUS (UK) LTD | Reading | A rating |
| Retec Equipment Ltd | Lyne | A rating |
| Retford Senior Care Services Limited | Retford | A rating |
| Rethink Events Limited | Brighton | A rating |
| Rethink Priorities UK Ltd | Eastbourne | A rating |
| ReThink Productivity Consulting LTD | Newcastle Under Lyme | A rating |
| Rethink Rebuild Society | Stockport | A rating |
| RethinkX (UK) Limited | London | A rating |
| Rethrodent Limited T/A Rozsa Dental Clinic | Henley-on-Thames | A rating |
| Retina IT Ltd | London | A rating |
| RETN Capital Ltd | London | A rating |
| RETN LTD | London | A rating |
| RETN NETWORKS LTD | London | A rating |
| Reto Care Limited | Stoke-on-Trent | A rating |
| Retons Care and Training Services | Dartford | A rating |
| Retool UK Limited | London | A rating |
| Retreats Group Limited | Haverfordwest | A rating |
| RETRO COMFORT LIMITED | TYNE AND WEAR | A rating |
| Retro Control Limited | Bolton | A rating |
| Retro Healthcare Limited | Northamptonshire | A rating |
| RETRO HOUSING LIMITED | Hounslow | A rating |
| Retro Labs Ltd T/A TILT | London | A rating |
| Retro Track & Air (UK) Ltd | Dursley | A rating |
| RETROFIT-UK INSTALLATIONS LTD | Birmingham | A rating |
| RetrofitWorks | London | A rating |
| Retrotech Home Installations Ltd | High Wycombe | A rating |
| Rettenmaier UK Ltd | Reigate | A rating |
| RETURNS OFFICE LTD | London | A rating |
| REUDAN INTERNATIONAL LTD | London | A rating |
| Reuse Technology Group Ltd | Rainham | A rating |
| Reuters News & Media Ltd | London | A rating |
| REV INFO SOLUTIONS LTD | READING | A rating |
| Rev Rooms (Sound) Ltd | Brighton | A rating |
| Rev. Marcus Hobson | Finaghy | A rating |