| Rebecca Abigail PR Ltd | London | A rating |
| REBECCA JENEEN LIMITED | MALLAIG | A rating |
| Rebekah's Restoration Ltd | London | A rating |
| Rebel & Love Ltd | Oxford | A rating |
| Rebel Clothing Company Limited | Nottingham | A rating |
| REBEL INFRASTRUCTURE ASSETS & OPERATIONS UK LTD LTD (RIO LTD) | LONDON | A rating |
| Rebel Internet Restaurant Limited | London | A rating |
| REBEL UNICORN GROUP LTD | London | A rating |
| Rebellion Group Ltd | Oxford | A rating |
| Rebelvend UK Limited | Farnborough | A rating |
| Rebirt Limited | Arlingham | A rating |
| Reboot Online Marketing Ltd | London | A rating |
| Reborn Clinic Limited | London | A rating |
| Reborn Healthcare Limited | Basildon | A rating |
| REBOUND DIAGNOSTIC AND THERAPEUTIC SERVICES LIMITED | Walton-On-Thames | A rating |
| Rebound Physiotherapy Services Ltd | Chester | A rating |
| Reboxed Ltd | London | A rating |
| Rebuilding Christian Foundation Church CIO | London | A rating |
| Rebuildy Ltd | London | A rating |
| Rebuyer Limited | SUNDERLAND | A rating |
| REC STUDIOS LIMITED | London | A rating |
| Receiptco Manufacturing (UK) Ltd. | Peterborough | A rating |
| Recent Spaces Ltd | London | A rating |
| Recentre Health Ltd | London | A rating |
| Receptional Ltd | Bedford | A rating |
| Rech Ltd | Hemel Hempstead | A rating |
| RECHARGEME LTD | London | A rating |
| Recheck Ltd | London | A rating |
| Recipe Advertising Limited | London | A rating |
| Recircle Ltd | London | A rating |
| Recirculate Systems Limited | Chelmsford | A rating |
| Reckitt Benckiser Group Plc | Slough | A rating |
| Reclamet Repair and Refinish Ltd | Birchington | A rating |
| RECO FAMILY CHIROPRACTIC CENTRE | BRISTOL | A rating |
| Reco Hoist Limited | Cambridgeshire | A rating |
| Reco Medical Ltd | Uxbridge | A rating |
| Reco Technologies Private Limited | Manchester | A rating |
| Recognise Bank Limited | London | A rating |
| Recognyte Limited | London | A rating |
| Recollective Ltd | London | A rating |
| Recom Farmhouse Holdings Ltd | London | A rating |
| RECOM Solutions Ltd | Salford | A rating |
| ReCon Waste Management | Craigavon | A rating |
| Reconciling Leaders Network | London | A rating |
| Reconnect Care Agency Limited | Nottingham | A rating |
| Reconomy (UK) Limited | Telford | A rating |
| Record Packaging Systems Ltd | Stretford | A rating |
| Record plc | London | A rating |
| Recorded Future UK Limited | London | A rating |
| Recordsure Limited | London | A rating |
| Recorra ltd | London | A rating |
| Recoturbo Limited | Doncaster | A rating |
| Recourse AI Ltd | MANCHESTER | A rating |
| Recover Physiotherapy Ltd | Norwich | A rating |
| Recoverie UK Ltd | London | A rating |
| Recovery & Turnaround Limited | Matlock | A rating |
| Recovery Support Limited | Bolton | A rating |
| Recraft AI Limited | London | A rating |
| Recresco Ltd | Nottinghamshire | A rating |
| Recro Engineering Ltd | Dungannon | A rating |
| RECRUIT 4CARE LTD | Portsmouth | A rating |
| Recruit Genie (Europe) Ltd | Leeds | A rating |
| Recruit in Care Ltd | NOTTINGHAM | A rating |
| Recruit Workforce Ltd | Ilford | A rating |
| RECRUIT WORLDWIDE LIMITED.T/A Zebra Multimedia | London | A rating |
| Recruiter Insider Limited | London | A rating |
| RecruitHub Platform | London | A rating |
| Recruiting Hub International Ltd | Peterborough | A rating |
| Recruitment and Employment Confederation | London | A rating |
| Recruitment Drive | LONDON | A rating |
| Recruitment For You Limited | Lancashire | A rating |
| RECRUITMENT PRECISION LIMITED | SUNDERLAND | A rating |
| Recruitment Smart Technologies Ltd | London | A rating |
| Recruitment Solutions Alba Ltd | Glasgow | A rating |
| Rectory Care Limited | Wolverhampton | A rating |
| RECTORY FARM SUPERMARKET | NORTHAMPTON | A rating |
| RECTORY HOUSE CARE LIMITED t/as Rectory House Nursing Home | Lancing | A rating |
| RECURE BIOTECHNOLOGY & COSMETICS LIMITED | London | A rating |
| Recurly UK Limited | Manchester | A rating |
| Recurrent Energy Power Services UK | Colchester | A rating |
| Recursion London Ltd | London | A rating |
| Recursive Superintelligence Ltd | London | A rating |
| Recy Traders (UK) Limited | Cambridgeshire | A rating |
| Recyber Opco Ltd | Warminster | A rating |
| RECYCLE FOR FUTURE LTD | PETERBOROUGH | A rating |
| RECYCLE FORCE LIMITED | Corby | A rating |
| Recycle It Global Ltd | Truro | A rating |
| Recycled Plastics UK Ltd | Wolverhampton | A rating |
| Recycleye | London | A rating |
| Recycling Lives Compliance Services | Preston | A rating |
| RECYCLING SERVICES LTD | ERITH | A rating |
| RECYCLING SOLUTIONS (PLASTICS) LTD | Birmingham | A rating |
| Recycling With skips Limited T/A Quick Skip Hire | West Drayton | A rating |
| Recyco Limiited | Omagh | A rating |
| Recyplas Limited | Wimblington | A rating |
| Red (EU) Limited | Luton | A rating |
| Red Alert Telecare | Ashford | A rating |
| Red and Greens Africana Food Store LTD | Bradford | A rating |
| RED ANGEL CATERING LIMITED T/a Shahs Secreto | Guildford | A rating |
| Red Ant Digital Ltd | London | A rating |
| RED APPLE FOOD LTD | STOKE-ON TRENT | A rating |
| Red Arrow Electrical Limited | Barnsley | A rating |
| RED ASH PIZZA LTD | London | A rating |
| Red Badger Consulting Limited | London | A rating |
| Red Balloon Educational Trust | Cambridge | A rating |
| Red Balloon Foundation | Walthamstow | A rating |
| Red Band Chemical Limited T/A Lindsay & Gilmour | Edinburgh | A rating |
| Red Bee Media Limited | Chiswick | A rating |
| Red Box Telecom Ltd t/as Red Dawn Consulting | Northwood | A rating |
| Red Brick Marketing Unlimited | London | A rating |
| RED BRICK UK CONSTRUCTIONS LTD | Smethwick | A rating |
| Red Bull Company Limited | London | A rating |
| Red Bull Media House UK Ltd (RBMHUK) | London | A rating |
| RED BULL RACING LTD | MILTON KEYNES | A rating |
| Red Bull U.K. Ltd | London | A rating |
| Red Carnation Hotels | London | A rating |
| RED CHILLI (CARLISLE) LIMITED | Cumbria | A rating |
| RED CHILLI FLAVOUR LTD | SURREY | A rating |
| RED CHILLI LONDON (UK) LTD | London | A rating |
| Red Chilli Newport Limited T/A Red Chilli Kebab and Grill Bar | Newport | A rating |
| RED CHILLI NTH COMPANY LTD | NORTHALLERTON | A rating |
| RED CHILLI TW LTD | Basildon | A rating |
| Red Chillies Indian Cuisine Limited | Basildon | A rating |
| RED CHILLY LIMITED | Stratford-Upon-Avon | A rating |
| RED CIRCLE SECURITY SERVICES LIMITED | LONDON | A rating |
| Red Commerce Ltd | London | A rating |
| Red Construction Group Limited | Bedford | A rating |
| Red Construction Ltd | Solihull | A rating |
| RED COYOTE GUARDING LTD | London | A rating |
| Red Deer Herbs Limited | Pershore | A rating |
| Red Diamond Executive Head Hunters Ltd | Barnsley | A rating |
| RED Distillery Ltd | Liphook | A rating |
| Red Dog Restaurants Limited | London | A rating |
| Red Dot Jewels Ltd | Pinner | A rating |
| RED DRAGON SERVICE STATION LTD | Southampton | A rating |
| RED EAGLE LOGISTIC LTD | London | A rating |
| Red Engineering Design Ltd | London | A rating |
| Red Events London Limited T/A Clissold Arms Gastro Pub | London | A rating |
| RED EYE INTERNATIONAL LIMITED | Crewe | A rating |
| Red Eyewear Ltd | Mortlake | A rating |
| RED FORT (NW) LTD | Manchester | A rating |
| Red Gate Software Ltd | Cambridge | A rating |
| Red Hall Hotel (Bury) Limited | Bury | A rating |
| Red Hat UK Ltd | London | A rating |
| RED HOMES HEALTHCARE GRANTHAM LTD | GRANTHAM | A rating |
| RED HOT GOODS LTD | Harrow | A rating |
| Red Hotels Limited | Newquay | A rating |
| Red House Surgery | Milton Keynes | A rating |
| Red Industries (Stoke) Limited | Burntwood | A rating |
| Red Jelli Ltd t/a Dots Laundry | Reading | A rating |
| Red Kite BPM Ltd | Newcastle Upon Tyne | A rating |
| Red Kite Learning Trust | Harrogate | A rating |
| Red Lantern Digital Media Limited | Cheshire | A rating |
| Red Lentils Ltd | Manchester | A rating |
| RED LIGHT MANAGEMENT LIMITED | LONDON | A rating |
| Red Line Pharmacovigilance Ltd | Milton Keynes | A rating |
| RED LION (JUNCTION 16) LIMITED | Daventry | A rating |
| Red Lion Conveniences | Greater London | A rating |
| Red Lion Leisure Ltd | Cambridge | A rating |
| RED LIONS ESTATE LTD | RICHMOND | A rating |
| Red Loft LLP | London | A rating |
| RED MAATS LIMITED | London | A rating |
| Red Miracle (Cranford) Limited T/A Dominos Pizza | Hounslow | A rating |
| Red Miracle (hereford) Ltd T/as Domino's Pizza | Hereford | A rating |
| Red Miracle (Ludlow) Ltd T/as Domino's Pizza | Ludlow | A rating |
| Red Miracle (Nuneaton) Ltd | Isleworth | A rating |
| RED MIRACLE (SOUTHALL) LIMITED T/A Dominos | Southall | A rating |
| RED MIRACLE LIMITED T/A Dominos | London | A rating |
| RED MIRACLE T/A Dominos | Shrewsbury | A rating |
| Red Miracle Wokingham Ltd | Middlesex | A rating |
| Red Mist Leisure | Stratfield Turgis | A rating |
| RED OAK STORES LTD | WOKINGHAM | A rating |
| Red Oaks Care Home Ltd | Mansfield | A rating |
| RED OCEAN LIMITED T/A SUBWAY | SURREY | A rating |
| Red Olive Trading Limited | Alton | A rating |
| Red Orange Arts Agency | Barnet | A rating |
| Red Orange International Limited | Kent | A rating |
| Red Panda Software Ltd | Kenilworth | A rating |
| RED PARROT ACCOUNTING LIMITED | SWINDON | A rating |
| Red Parrot Recruitment Limited | Swindon | A rating |
| Red Penguin Associates Limited | Portsmouth | A rating |
| Red Pepper (Otley) Ltd | Leeds | A rating |
| Red Pepper & Pizza on Demand Ltd | London | A rating |
| RED Physiotherapy Ltd | Milton Keynes | A rating |
| RED PILL PRODUCTIONS LIMITED | London | A rating |
| Red Planet Pictures Limited | London | A rating |
| Red Production Company Limited | Manchester | A rating |
| RED PYTHON LTD T/A SUBWAY | MIDDLESEX | A rating |
| Red Rhino Crushers (UK) Limited | Grantham | A rating |
| Red Ribbon Asset Management PLC | London | A rating |
| Red Robin Homecare Ltd | St Helens | A rating |
| Red Rock Estate and Property Management Limited | Beaumont | A rating |
| RED ROCK PRIVATE LIMITED | London | A rating |
| Red Rock Renewables Limited | Edinburgh | A rating |
| Red Rocks Nursing Home Ltd | Merseyside | A rating |
| Red Roofs Midlands Limited | Newark | A rating |
| Red Roofs Surgery | Nuneaton | A rating |
| RED ROOSTERS LONDON LTD | Dagenham | A rating |
| Red Rose Care Community | Newark | A rating |
| RED ROSE CUISINE LTD | Portsmouth | A rating |