| RKRP Ltd | London | A rating |
| RKS FUTURE LTD. | NEWCASTLE UPON TYNE | A rating |
| RKS STORE LTD T/A BRETT & SONS - PREMIER | Swindon | A rating |
| RKSOFT SOLUTIONS LTD | SLOUGH | A rating |
| RKT GILL LIMITED | Gravesend | A rating |
| RKT Prestige Ltd | Gerards Cross | A rating |
| RKV Consultants Ltd | London | A rating |
| RKV RETAIL LTD T/ A RAJ GOWRY EXPRESS | BIGGIN HILL | A rating |
| RKVMM Limited | Wembley | A rating |
| RKY Foods Ltd T/A Family Shopper | Sheffield | A rating |
| RL Capital Ltd | Basingstoke | A rating |
| RL Retail Services Limited | Watford | A rating |
| RLC (UK) Limited | Accrington | A rating |
| RLE FutureMotiv Limited | Lighthorne | A rating |
| RLE International Product Development | Essex | A rating |
| RLE INTERNATIONAL PRODUCT DEVELOPMENT LIMITED | BASILDON | A rating |
| RLG International Limited | London | A rating |
| RLMS MANAGEMENT LTD | Blackpool | A rating |
| RLS Image Limited | Weybridge | A rating |
| RLS Search | Ivybridge | A rating |
| RLT Bexley Limited trading as Nisa Local | Bexley | A rating |
| RM & CO ACCOUNTANCY LTD | SUNDERLAND | A rating |
| RM & Partners UK Limited | London | A rating |
| RM Accountant Services Ltd | Rochdale | A rating |
| RM Architects Limited | London | A rating |
| RM Auctions Limited | Richmond Upon Thames | A rating |
| RM CAPITAL MARKETS LIMITED | Edinburgh | A rating |
| RM Dungannon Ltd | Dungannon | A rating |
| RM Education Ltd | Abingdon | A rating |
| RM Electrics | Randalstown | A rating |
| RM FOOD TRADING LIMITED | London | A rating |
| RM Gardening Ltd | Hereford | A rating |
| RM Homes and Lifestyle Ltd T/A Ziba Homes | Coulsdon | A rating |
| RM MANAGEMENT LTD | Manchester | A rating |
| RM PESTOKILL LIMITED | Mitcham | A rating |
| RM PROPERTY SOLUTIONS LIMITED | Sheffield | A rating |
| RM RESTAURANTS GROUP LTD T/a Amigos Burgers & Shakes | London | A rating |
| RM ROUNDHOUSE LTD | PORTSMOUTH | A rating |
| RM SPEEDY LTD | London | A rating |
| RM Vape Store Ltd T/A Vape Connect | Preston | A rating |
| RM365 Holdings Ltd | Birmingham | A rating |
| RMA Home Ware Ltd | Essex | A rating |
| RMA Hospitality Ltd T/A Ruthvika Spices & Kitchen | North Ferriby | A rating |
| RMA OPERATING LIMITED t/a Millus | West Bromwich | A rating |
| RMAI Limited | London | A rating |
| RMBC Council | Rotherham | A rating |
| RMBEAUTYENHANCER LIMITED | LONDON | A rating |
| RMBI Care Company | London | A rating |
| RMBM Petroleum Limited | New Malden | A rating |
| RMD Cams Ltd | Watford | A rating |
| RMD GLOBAL MARKETING LIMITED | Peterborough | A rating |
| RMD Kwikform Limited | Walsall | A rating |
| RMDP Limited T/A Ystradgynlais Dental Practice | Swansea | A rating |
| RME Cheshire Veterinary Services Ltd | Malpas | A rating |
| RMF Construction Services Limited | Birmingham | A rating |
| RMG GROUNDWORKS LTD | Blackwood | A rating |
| RMG Networks Limited | Luton | A rating |
| RMG Operations Limited | London | A rating |
| RMGS (Scot) Limited | Inverness | A rating |
| RMH (Wispers) Care LLP | Christchurch | A rating |
| RMH Care Ltd. | London | A rating |
| RMI Accountancy (Rochdale) Ltd | Rochdale | A rating |
| RMI ACCOUNTANCY LTD | BURNLEY | A rating |
| RMI Architects Ltd | Belfast | A rating |
| RMI Fabrications Ltd | Lutterworth | A rating |
| RMJ Clinical Solutions Ltd | London | A rating |
| RMJ PVT Ltd | Nottinghamshire | A rating |
| RMJ TRADING LTD | Grantham | A rating |
| RMJ Transport Limited | Walsall | A rating |
| RMK Maritime (Europe) Limited | London | A rating |
| RMK MOTOR & REPAIR CENTRE LTD | Barking | A rating |
| RML Group Limited | Wellingborough | A rating |
| RMLB Design Ltd | Sandwich | A rating |
| RMM Bloodstock | Newmarket | A rating |
| RMM LONDON LIMITED T/A WOBURN TANDOORI | London | A rating |
| RMM Premier Ltd T/A Premier Express | Norwich | A rating |
| RMP International UK Limited | London | A rating |
| RMR Concerts | Burnley | A rating |
| RMR Partnership LLP | Harrow | A rating |
| RMR TRADING 2 LTD | Airdrie | A rating |
| RMS (England) Limited | London | A rating |
| RMS (PRESTON) LIMITED | Preston | A rating |
| RMS Cash Solutions Ltd T/A Pivotal | Belfast | A rating |
| RMS Connect Ltd | London | A rating |
| RMS Convenience Limited | Birmingham | A rating |
| RMS Energy Solutions Limited | Coventry | A rating |
| RMS Events Ltd | London | A rating |
| RMS International UK Limited | Swinton Manchester | A rating |
| RMS Investments Ltd | London | A rating |
| RMS NEWARK LTD | Newark | A rating |
| RMS RETAIL LIMITED | Durham | A rating |
| RMS SUPERMARKET | DUNSTABLE | A rating |
| RMSG MEP SERVICE UK LTD | West Bromwich | A rating |
| RMSI Limited | Reading | A rating |
| RMSS LTD | London | A rating |
| RMW-UK Limited | Surrey | A rating |
| RMY Clements Limited | Birmingham | A rating |
| RN ACCESSORIES LIMITED | Wigan | A rating |
| RN BROTHERS LTD | London | A rating |
| RN BUILDERS LTD | Bradford | A rating |
| RN ClearPoint Learning Systems UK Ltd | London | A rating |
| RN COMPANY RETAIL LIMITED | Ilkeston | A rating |
| RN Laboratories UK Ltd | Egham | A rating |
| RN NEWS LIMITED | Hemel Hempstead | A rating |
| RN PVT LTD | London | A rating |
| RN Restaurant Ltd | Carryduff | A rating |
| RN Solicitors Limited | Birmingham | A rating |
| RN Trade Ltd | Motherwell | A rating |
| RN TRADERS LTD T/A CHILLIES | STRATHAVEN | A rating |
| RN TRANSPORT & CONSTRUCTION LTD | Wolverhampton | A rating |
| RN2016 LIMITED | Harlow | A rating |
| RNA Analytics LTD | Reigate | A rating |
| RNB Cargo Ltd | Hounslow | A rating |
| RNB Electrical & Security Ltd | Ramsgate | A rating |
| RNC VITHANA LTD | Birmingham | A rating |
| RND TAX REFUNDS LTD | London | A rating |
| RNDM RETAIL LIMITED | Preston | A rating |
| RNDTEK LTD | SLOUGH | A rating |
| Rnduk Ltd | Wellingborough | A rating |
| RNHS Limited | Bolton | A rating |
| RNI Consulting Limited | London | A rating |
| RNJ Care LTD | London | A rating |
| RNJ HOMECARE LIMITED | Milton Keynes | A rating |
| RNK ENGINEERING LTD | Milton Keynes | A rating |
| RNM ACCOUNTANTS UK LTD | LONDON | A rating |
| RNP LIMITED T/A RNP Local Convenience Store and Off Licence | Kidderminster | A rating |
| RNR Foods Ltd | Lewisham | A rating |
| RNR MAINTENANCE UK LIMITED | London | A rating |
| RNR Motors Ltd | Thatcham | A rating |
| RNS BUSINESS SOLUTIONS LIMITED T/A RNS | HARROW | A rating |
| RNS EDUCATION LIMITED | London | A rating |
| RNS Education Ltd | London | A rating |
| RNS Leisure Ltd | Dungannon | A rating |
| RNS Meals Ltd | Hitchin | A rating |
| RNS Media & Productions | Harrow, London | A rating |
| RNSS Ltd | London | A rating |
| RNT GLOBAL LTD | ROMFORD | A rating |
| RNT UK LIMITED | London | A rating |
| RNV Construction Limited | Watford | A rating |
| RNZ EQUEPET UK LTD | London | A rating |
| RO Engineeria Ltd | Manchester | A rating |
| RO Evesham Limited T/A The Royal Oak | Evesham | A rating |
| Ro&Zo Limited | London | A rating |
| ROAD BUDDY LIMITED | London | A rating |
| ROAD JET PRIVATE HIRE LTD | St. Ives | A rating |
| Road Life Health Care Limited | Rotherham | A rating |
| Road Management Services (A13) Operations Limited | London | A rating |
| ROAD RUNNER COURIER SERVICE LIMITED | Swindon | A rating |
| Road Runner Trucking Ltd | London | A rating |
| ROAD RUNNERS MECO LTD | Horley | A rating |
| Road Tankers Armagh Ltd | Armagh | A rating |
| Road Tankers Northern Ltd | Barnsley | A rating |
| Road Traffic Accident Law (Scotland) LLP | Edinburgh | A rating |
| Roade Pharmacy | Northampton | A rating |
| Roade Service Station | Roade | A rating |
| Roade Village Shop (Sole Traders) | Northampton | A rating |
| ROADERN LTD | London | A rating |
| Roadgrip Ltd | Edlesborough | A rating |
| Roadhouse Grill Ltd | Romford | A rating |
| Roadliner UK Ltd | Chessington | A rating |
| ROADMAP TM LTD | London | A rating |
| ROADMETRICS LTD | London | A rating |
| RoadRunners Taxis that Don't Cost Earth LLP | Redhill | A rating |
| Roadside (Garages) Limited | Coleraine | A rating |
| ROADSIDE ASSIST LIMITED | Hounslow | A rating |
| Roadside Technologies Ltd | Chesterfield | A rating |
| Roadster California Ltd T/A Hanrue | London | A rating |
| roadwise transport ltd | Birmingham | A rating |
| Roadx Logistics Ltd | Iver, England | A rating |
| Roadx Services Ltd | Edgware | A rating |
| Roadzen Holdings (UK) Limited | Coventry | A rating |
| Roam Artists Ltd | London | A rating |
| Roam Foods Ltd | London | A rating |
| Roam West Ltd | Nr Fort William | A rating |
| ROAMGO TRAVELS LTD | Birmingham | A rating |
| Roaming Network Solutions Ltd | London | A rating |
| Roar Digital Limited | London | A rating |
| Roast Productions Ltd | London | A rating |
| ROASTED BEAN CP LTD T/A ROASTED BEAN | London | A rating |
| Roasting Plant (UK) Limited | London | A rating |
| Roath Construction Limited | Southampton | A rating |
| ROATHAN SERVICES LTD | LONDON | A rating |
| Rob Bailey T/A RnB Records | London | A rating |
| ROB HOUSE TAKEAWAY LIMITED T/AS PRITI INDIAN TAKEAWAY | Brighton | A rating |
| Rob McAlister Ltd | SHILDON | A rating |
| Rob Property Construction & Maintenance Ltd | Cambridge | A rating |
| Rob United LTD T/a Moonlight Cuisine | Birmingham | A rating |
| Roband Electronics Ltd | Horley | A rating |
| ROBATA RESTAURANTS LTD | LONDON | A rating |
| Robb Veterinary Clinic Ltd | Motherwell | A rating |
| Robbies Fish Bar t/a D & D (Bath) Ltd | Bath | A rating |
| Robeco Institutional Asset Management UK Limited | London | A rating |
| Robena Contract Furnishings Limited | Dewsbury | A rating |
| Robert Allkja | EASTBOURNE | A rating |
| Robert Bird & Partners | London | A rating |
| Robert Bosch Ltd | Uxbridge | A rating |
| Robert Bratby Gardens Limited | Evesham | A rating |
| Robert Brett & Sons Limited | Canterbury | A rating |
| Robert Clack School of Science | Dagenham | A rating |
| Robert Cullen Limited | Glasgow | A rating |