| Royal Agricultural University | Cirencester | A rating |
| Royal Air Maroc | London | A rating |
| Royal Alexandra & Albert School | REIGATE | A rating |
| Royal Asiatic Society of Great Britain and Ireland | London | A rating |
| Royal Bank of Canada | London | A rating |
| Royal Barbers | Caerphilly | A rating |
| Royal Berkshire NHS Foundation Trust | Reading | A rating |
| Royal Borough of Kingston upon Thames | Kingston | A rating |
| Royal Borough of Windsor and Maidenhead | Maidenhead | A rating |
| Royal Botanic Gardens, Kew | Richmond | A rating |
| Royal British Veterans Enterprise | Aylesford | A rating |
| Royal Cambridge Home | East Molesey | A rating |
| ROYAL CARS AUTOCENTRE LIMITED | HIGH WYCOMBE | A rating |
| Royal College of Art | London | A rating |
| Royal College of Music | London | A rating |
| Royal College of Nursing | London | A rating |
| Royal College of Obstetricians & Gynaecologists | London | A rating |
| Royal College of Pharmacy | London | A rating |
| Royal College of Surgeons of England | London | A rating |
| Royal College of Veterinary Surgeons | London | A rating |
| Royal Connections | London | A rating |
| Royal Conservatoire of Scotland | Glasgow | A rating |
| Royal Cornwall Hospitals NHS Trust | Truro | A rating |
| ROYAL COURT CARE HOME | HOYLAND | A rating |
| Royal Crown Derby Porcelain LTD | DERBY | A rating |
| Royal Devon University Healthcare NHS Foundation Trust | Exeter | A rating |
| Royal Dornoch Golf Club | Dornoch | A rating |
| Royal Economic Society | London | A rating |
| Royal Embassy of Saudi Arabia | London | A rating |
| Royal Enfield (UK) Limited | Leicestershire | A rating |
| Royal Exchange Theatre Ltd | Manchester | A rating |
| ROYAL FISH BAR | West Midlands | A rating |
| Royal forester Inn | Kidderminster | A rating |
| Royal Free London NHS Foundation Trust | London | A rating |
| Royal Garden Hotel Ltd | London | A rating |
| Royal Grammar School Guildford | Guildford | A rating |
| Royal Grammar School High Wycombe | High Wycombe | A rating |
| Royal Greenland Limited | Manchester | A rating |
| Royal Gurkha | Bedford | A rating |
| Royal High Corstorphine Cricket Club | Edinburgh | A rating |
| Royal Highland Hotel | Inverness | A rating |
| Royal Holloway and Bedford New College | Egham | A rating |
| Royal Horticultural Society | Woking | A rating |
| Royal Hotel Tain Ltd | Tain | A rating |
| Royal Hotel TLK Limited | London | A rating |
| Royal IHC Limited | Newcastle upon Tyne | A rating |
| Royal Institute of Chartered Surveyors | London | A rating |
| Royal Jordanian Airlines | LONDON | A rating |
| Royal Leamington Spa Nursing Home Ltd | Leamington Spa | A rating |
| Royal Liverpool Philharmonic Society | Liverpool | A rating |
| Royal Lyceum Theatre Company | Edinburgh | A rating |
| Royal Mail Group Limited | London | A rating |
| Royal Mencap Society | Peterborough | A rating |
| Royal Museums Greenwich | London | A rating |
| Royal National Orthopaedic Hospital NHS Trust | Stanmore | A rating |
| Royal Northern College of Music | Manchester | A rating |
| Royal Norwegian Embassy | London | A rating |
| ROYAL OAK MINI MARKET | MANCHESTER | A rating |
| Royal Onsen | Bradford | A rating |
| Royal Papworth Hospital NHS Foundation Trust | Cambridge | A rating |
| Royal Park Nursing Home | Wolverhampton | A rating |
| Royal Philharmonic Orchestra Limited | London | A rating |
| Royal Priesthood Pentecostal Church (UK) | London | A rating |
| Royal Rides | Ipswich | A rating |
| Royal Russell School | Croydon | A rating |
| Royal Sanders UK Limited | Preston | A rating |
| Royal School for the Deaf Derby | Derby | A rating |
| Royal School of Needlework | East Molesey | A rating |
| Royal Scottish Academy of Art and Architecture | Edinburgh | A rating |
| Royal Scottish National Orchestra Society Ltd | Glasgow | A rating |
| Royal Shakespeare Company | Stratford upon Avon | A rating |
| Royal Society for the Protection of Birds | Sandy | A rating |
| Royal Society of Edinburgh | Edinburgh | A rating |
| Royal Society of Tropical Medicine and Hygiene | London | A rating |
| Royal Star & Garter | High Wycombe | A rating |
| Royal Surrey NHS Foundation Trust | Guildford | A rating |
| Royal Sweets | Nottingham | A rating |
| Royal Thai Embassy | London | A rating |
| Royal Thames Yacht Club Ltd | London | A rating |
| Royal Trinity Hospice | London | A rating |
| Royal Tunbridge Trading Ltd | london | A rating |
| Royal United Hospital Bath NHS Trust | Bath | A rating |
| Royal Veterinary College | Hatfield | A rating |
| Royal Veterinary College | London | A rating |
| Royal Welch Fusiliers Regimental Museum | Caernarfon | A rating |
| Royal Wharf Aesthetics & Academy Ltd | London | A rating |
| Royal Wootton Bassett Cricket Club | Royal Wootton Bassett | A rating |
| Royal Yachting Association | Southampton | A rating |
| Royala Care Ltd | Chatham | A rating |
| ROYALBLUE EXECUTIVE SERVICES LTD | Ashford | A rating |
| Royale Business College | Birmingham | A rating |
| Royale Carers ltd | Southend-on-sea | A rating |
| ROYALE CATERING NW LTD | Rochdale | A rating |
| Royale Dosa Takeaway Ltd | Gants Hill | A rating |
| Royale Graphics Ltd | Manchester | A rating |
| Royale Grill and Dessert Ltd | Sunbury-On-Thames | A rating |
| Royale Peri Peri Chicken Ltd | London | A rating |
| Royale Personnel Ltd | Bedford | A rating |
| Royale Primo UK Limited | Manchester | A rating |
| Royale Stones Ltd | Lincoln | A rating |
| Royale Tiles Ltd | London | A rating |
| ROYALE TOUCH EVENTS LTD | Uxbridge | A rating |
| ROYALTEA LTD | Leicester | A rating |
| ROYC Ltd | London | A rating |
| Royce Peeling Green Limited | Manchester | A rating |
| ROYD Tool Group UK Ltd | Chelmsford | A rating |
| Roydav Retail Ltd | Abergavenny | A rating |
| ROYEL SECURITY LTD | Newcastle Upon Tyne | A rating |
| Royel Tissue Ltd | Essex | A rating |
| Royes House LTD | Cambridge | A rating |
| Royle care Limited | Reading | A rating |
| Royle Kashmir Travel Ltd | Luton | A rating |
| ROYO Entertainment Limited | London | A rating |
| ROYS Restaurant Ltd | Old Welwyn | A rating |
| ROYSTON ACCOUNTANTS LIMITED T/A TAXASSIST ACCOUNTANTS | Royston | A rating |
| ROYSTON DENTAL PRACTICE | Glasgow | A rating |
| Royston Ltd | Newcastle Upon Tyne | A rating |
| Royston Specsavers Limited T/A Specsavers Opticians | Royston | A rating |
| ROYSTON SPICE LIMITED T/A Ashiana Spice | Royston | A rating |
| Royston Tandoori Express Ltd, T/A Royston Tandoori | Royston | A rating |
| Roytandoori Ltd | Bangor | A rating |
| Royton & Crompton Family Practice | Oldham | A rating |
| Royton Civil and Structural Ltd | Oldham | A rating |
| Royton Cricket, Bowling, Tennis & Running Club | Oldham | A rating |
| Royton Ltd | Northampton | A rating |
| Roz Barr Architects Ltd | London | A rating |
| ROZA CAR REPAIRS & ACCESSRIES LIMITED | London | A rating |
| Rozana Ltd | Kingston Upon Thames | A rating |
| Rozbay Foods LTD T/A Tavus Lounge & Grill | brighton | A rating |
| ROZE INT (PVT) LTD | London | A rating |
| Rozel Breeding Centre Ltd | Southampton | A rating |
| Rozelin Ltd | London | A rating |
| Rozey Days Montessori Ltd | Bristol | A rating |
| ROZY KRISHNA T/A ROZY POST OFFICE | GREENFORD | A rating |
| RP BUILD LTD | England | A rating |
| RP CARS LTD | Blackburn | A rating |
| RP HEALTHCARE LTD T/A MOTTINGHAM PHARMACY | LONDON | A rating |
| RP International Ltd | London | A rating |
| RP International Resources (Europe) Ltd | London | A rating |
| RP Partners Limited | London | A rating |
| RP-X c/o UK Sports Products Limited | Bedford | A rating |
| RPAJ CONTRACTOR LIMITED | Wolverhampton | A rating |
| RPC (Hotels) Ltd | Oswestry | A rating |
| RPC COATINGS LTD | Heckmondwike | A rating |
| RPC Containers Limited | Corby, | A rating |
| RPG DISTRIBUTORS LTD | BIRMINGHAM | A rating |
| RPG Healthcare Ltd T/A Hillsborough Pharmacy | Sheffield | A rating |
| RPG Strategy Partners Ltd | London | A rating |
| RPGCC | London | A rating |
| RPH Pharma Ltd | Cheadle | A rating |
| RPJ Energy Solutions Ltd | Glasgow | A rating |
| RPK Technologies Ltd | London | A rating |
| Rplus Analytics Solutions Limited | Preston | A rating |
| RPM Europe UK Limited | Bristol | A rating |
| RPM London Ltd | London | A rating |
| RPP Watford Limited t/a Roosters Piri Piri | Watford | A rating |
| RPR Ltd | Evesham | A rating |
| RPS Global Ltd | Dawlish | A rating |
| RPS HEALTHCARE LTD | Surrey, | A rating |
| RPS Plumbing LTD | Redditch | A rating |
| RPS Restaurants PVT Ltd t/a Sanjha Indian Restaurant | Ballymena | A rating |
| RPSK LTD | London | A rating |
| RPSS SERVICES LTD | Hounslow | A rating |
| RPT FOODS LIMITED T/A ASHOKA RESTAURANT | EAST SUSSEX | A rating |
| RPT SUPERSTORE LIMITED T/A Sheldon Supermarket | BIRMINGHAM | A rating |
| RQ Biotechnology Limited | London | A rating |
| RQ968 Ltd - Chilli Kitchen | Birmingham | A rating |
| RR Asian Bar and Grill Limited | Clay Cross | A rating |
| RR COMMERCIALS NW LIMITED | Manchester | A rating |
| RR Convenience and Off Licence Ltd | Leigh | A rating |
| RR CONVENIENCE STORE LTD | Bolton | A rating |
| RR Donnelley UK Directory Limited | Leeds | A rating |
| RR Drainage Limited | Dartford | A rating |
| RR FOOD & WINE LIMITED | Swansea | A rating |
| RR Food Limited T/A Subway | Leeds | A rating |
| RR Grocery ltd | MERTHER TYDFILL | A rating |
| RR Group Logistics Ltd | Ashford | A rating |
| RR Group of Companies UK Limited (trading as Wingers ) | Sittingbourne | A rating |
| RR KITCHEN&BEDROOMS LTD | Feltham | A rating |
| RR One Limited T/A Raju Omelette | Thornton Heath | A rating |
| RR RESTAURANT LIMITED, t/a Red Rose Restaurant | Mossley | A rating |
| RR Risk & Management Consultants Ltd | Manchester | A rating |
| RRD Retail Limited Ltd | Leeds | A rating |
| RRG Foods Ltd | Glasgow | A rating |
| RRG Group | Manchester | A rating |
| RRG MOTION PICTURE LIMITED | Coventry | A rating |
| RRH Investments Limited | Edinburgh | A rating |
| RRISING CONSTRUCTION LTD | Romford | A rating |
| RRIZS LIMITED | Feltham | A rating |
| RRJ Care Ltd | Great Dunmow | A rating |
| RRK CATERING LTD | Croydon | A rating |
| RRNT8 LTD T/As Wingrove Cafe | Newcastle upon Tyne | A rating |
| RRNT9 LIMITED TRADING AS WINGROVE NEWS | Newcastle Upon Tyne | A rating |
| RRP PVT LTD | Essex | A rating |
| RRR & RN LTD | Scunthorpe | A rating |
| RRR Transport Ltd | Willenhall | A rating |
| RRSS Transport Ltd | Leicester | A rating |
| RRT (UK) Limited | Luton | A rating |
| RRV RETAIL LTD | KINGSTON UPON HULL | A rating |
| RRY CONVENIENCE STORES LTD T/A LONDIS | ABERDEEN | A rating |