| Ridge Green Medical Centre | Swindon | A rating |
| RIDGE HEALTHCARE AND RECRUITMENT LTD | HULL | A rating |
| RIDGE PARTNERS LTD | London | A rating |
| Ridge View Homes Ltd. | London | A rating |
| Ridgeback Group Ltd | London | A rating |
| Ridgefield Consulting Ltd | Oxford | A rating |
| Ridgeford Development Limited | London | A rating |
| Ridgegate Home for old people | Reigate | A rating |
| Ridgemount Hotel | London | A rating |
| Ridgemount Public Relations Limited | London | A rating |
| Ridgetek Web Solutions Limited | Swalwell | A rating |
| Ridgeview Healthcare Limited | Enfield | A rating |
| Ridgeview Supported Living Ltd | Derby | A rating |
| Ridgeway Developments (Midlands) Limited | Little Witley | A rating |
| Ridgeway Education Trust | Didcot | A rating |
| Ridgeway Information Limited | Honiton | A rating |
| Ridgeway Learning Partnership | Tring | A rating |
| Ridgeway Manor | Surrey | A rating |
| RIDGEWAY POULTRY PRODUCTS LTD | Birmingham | A rating |
| Ridgeway Racing Ltd | Swindon | A rating |
| Ridgeway Research Ltd | St Briavels | A rating |
| Ridgeway Residential Home Limited | Sidmouth | A rating |
| Ridgeway Surveys Ltd | Chesham | A rating |
| Ridgeway View Family Practice | Swindon | A rating |
| Ridgewell House | Clacton On Sea | A rating |
| Ridgewood Global Limited | London | A rating |
| RIDGWAY MACHINES LIMITED | LEICESTER | A rating |
| Ridhi Sidhi Retail Limited T/A Keystore | Tillicoultry | A rating |
| Ridi & Co Ltd Tradiung As: Subway | Burnham on Sea | A rating |
| Ridia Limited | Daresbury | A rating |
| Riding House Cafe Ltd. | London | A rating |
| Ridley & Hall Legal Limited | Huddersfield | A rating |
| Ridleyfox Design Ltd T/A Portia Fox Design | London | A rating |
| Ridouts Professional Services Limited | London | A rating |
| Riedel Communications Ltd | Harefield | A rating |
| Rieder Wellness Limited | Bracknell | A rating |
| Rienzie Empire Ltd | New Southgate | A rating |
| Rif Prestige Car Ltd T/A SSS Motors | London | A rating |
| RIFAI UK LIMITED | London | A rating |
| Rifco Arts | Watford | A rating |
| Riff Raff Films | London | A rating |
| Riff Raff Films Ltd | London | A rating |
| Rift Solutions Ltd T/ As Caremark (Leeds) | Leeds | A rating |
| Rig Control Products Ltd | Blackburn | A rating |
| RIG INSPECTION AND WELDING SERVICES LTD | Derby | A rating |
| RIG INTELLIGENCE LTD | London | A rating |
| Rig Tubulars Limited | Aberdeen | A rating |
| Rigaku Europe SE | Sevenoaks | A rating |
| RIGBOURNEHILL CONVENIENCE | SUFFOLK | A rating |
| Rigby & Peller Ltd | London | A rating |
| Rigetti UK Limited | London | A rating |
| Rigging Projects Limited | Southampton | A rating |
| Rigginsew LTD | Truro | A rating |
| Rigglotel Limited | SALFORD | A rating |
| RIGHT 4 MIGRANTS UK LTD | Nuneaton | A rating |
| Right at Home Bristol East | Bristol | A rating |
| Right at Home Mid Cheshire | Northwich | A rating |
| Right at Home South Cheshire | Nantwich | A rating |
| Right at Home Stockport & Didsbury | Stockport | A rating |
| Right at Home Telford t/a Wadlow Care Limited | Telford | A rating |
| Right At Home Worthing & Shoreham | Shoreham-by-Sea | A rating |
| Right Building Construction Limited | Slough | A rating |
| RIGHT CARE (NW) LTD | Whitefield | A rating |
| Right Care 4 U | South Harrow | A rating |
| Right Care Services Ltd | Derby | A rating |
| Right Carpet and Flooring Ltd | Dunstable | A rating |
| Right Choice Care Ltd | London | A rating |
| RIGHT CHOICE DOUBLE GLAZING LTD | Romford | A rating |
| RIGHT CHOICE ESTATES LTD | London | A rating |
| Right Choice Glazing Limited | Ilford | A rating |
| Right Choice Insurance Brokers Ltd | Romford | A rating |
| Right Choice logistics Limited | London | A rating |
| Right Choice Medicare Limited | Highland | A rating |
| Right Choice Recruitment Solutions | Camberley | A rating |
| Right Choice Service Ltd | Southgate | A rating |
| Right Choices | Wigan | A rating |
| Right Cue Consulting Services Limited | Basingstoke | A rating |
| Right Formula Ltd | London | A rating |
| Right Hand Foundation | Ashton-under-lyne | A rating |
| Right Hand Group LTD | London | A rating |
| RIGHT HAND MOTOR LTD | Essex | A rating |
| Right Holidays Ltd | London | A rating |
| Right Home Estates Limited | Wembley | A rating |
| Right Hook Studio Ltd | Spennymoor | A rating |
| Right Kare Ltd T/A Right at Home Maidenhead | Maidenhead | A rating |
| Right Law Solicitors Ltd | London | A rating |
| Right Medicare Limited | Dunstable | A rating |
| RIGHT NOW CONTRACTING LTD | Bradford | A rating |
| RIGHT PRICE (MCR) LIMITED | Manchester | A rating |
| RIGHT PRICE (WHOLESALE) LTD | HAYES | A rating |
| Right Recruitment 24-7 Limited | Birmingham | A rating |
| Right Revenue Limited | Saintfield | A rating |
| RIGHT SOURCING LTD | London | A rating |
| Right Step Mortgages Ltd | Bicester | A rating |
| Right Temp Control Ltd | Croydon | A rating |
| Right There | Glasgow | A rating |
| Right Time Estates Ltd | Southall | A rating |
| Right Time Right Place Limited T/A Caffee Oro | Merseyside | A rating |
| RIGHT TO CARE LTD | DUDLEY | A rating |
| Right to Dream Limited | London | A rating |
| Right to Life UK | London | A rating |
| Right To Play International | London | A rating |
| Right Utility LTD | Newport | A rating |
| Rightangled Limited | Hammersmith | A rating |
| Rightbuild Building Solutions Ltd | Romford | A rating |
| Rightcard Payment Services Limited t/a Lemonade Finance | London | A rating |
| Rightcharge Limited | London | A rating |
| Rightdose Healthcare Limited | Glasgow | A rating |
| RIGHTEOUS BRANCH LIMITED | Coalville | A rating |
| Rightindem Limited | London | A rating |
| Rightmove Group Ltd | Milton Keynes | A rating |
| RIGHTNOW LTD | Reading | A rating |
| RIGHTPAK LTD | KINGS LANGLEY | A rating |
| RIGHTPHARM LTD | HARROW | A rating |
| Rightroad Edtech Limited | Sutton | A rating |
| RightShip UK Ltd | London | A rating |
| Rightsline Software UK Ltd | London | A rating |
| RIGHTWAY TRADERS N/W LIMITED | Manchester | A rating |
| RIGHTWAY WHOLESALE LIMITED | Glasgow | A rating |
| Rigibore Ltd | Hayle | A rating |
| Rigmar Services Ltd | Aberdeen | A rating |
| RigNet UK Limited | Westhill | A rating |
| RigQuip Drilling Services Ltd | Aberdeen | A rating |
| Rihana Ltd | Gillingham | A rating |
| RIIFO UK LTD | Burntwood | A rating |
| RIIMA OLDHAM LIMITED | Oldham | A rating |
| RIJ Food Ltd | Wembley | A rating |
| RIJAH LIMITED T/A MEGA MART | Ilford | A rating |
| RIJYOS TECHNOVATIONS LTD | Solihull | A rating |
| Rik's One Stop | Gillingham | A rating |
| RIKA GLOBAL LTD | Sutton Coldfield | A rating |
| Rika Group UK Ltd | London | A rating |
| RIKKYO SCHOOL IN ENGLAND | HORSHAM | A rating |
| Riley & Riley T/A The Queens Head | Farnham | A rating |
| Riley Square Limited T/A Nisa Local | Coventry | A rating |
| Riley Squares Limited T/As Nisa Local | Coventry | A rating |
| RIMAC TECHNOLOGY R&D UK LIMITED | Witney | A rating |
| Rimaya Ltd | Romford | A rating |
| Rimbal Ltd | London | A rating |
| Rimell Racing | Leafield | A rating |
| Rimes Technologies Limited | London | A rating |
| Rimi Renovations Building Services Ltd | Romford | A rating |
| RIMI SURGE LTD | Langley | A rating |
| Rimjhim Wimbourne Ltd | WIMBORNE | A rating |
| Rimkus Consulting UK Limited | London | A rating |
| RIMM SUSTAINABILITY LIMITED | London | A rating |
| Rimmingtons Enterprises Limited | Bradford | A rating |
| RIMNEET DHILLON CONSTRUCTION LIMITED | NOTTINGHAM | A rating |
| RIMO Capital Ltd | London | A rating |
| Rimond AEC Ltd | London | A rating |
| RIMTEN UK LTD | Huddersfield, | A rating |
| RIN SUSHI LTD | London | A rating |
| RINA Tech UK Limited | Leatherhead | A rating |
| Rinasha Properties Limited | London | A rating |
| Rindt Vehicle Design Ltd | Maidenhead | A rating |
| Ring Automotive Ltd | Leeds | A rating |
| Ring Dufferin Care (NI) Limited | Downpatrick, | A rating |
| Ring London Advertising Ltd | London | A rating |
| RING RING DISTRIBUTION LIMITED | London | A rating |
| RING ROAD GARAGE LTD | BUCKINGHAM | A rating |
| RingCentral UK Ltd | London | A rating |
| Ringfad Ltd | Ardglass | A rating |
| RingGo Limited | Basingstoke | A rating |
| RINGLESTONE POST OFFICE AND NEWS MARKET | MAIDSTONE | A rating |
| Ringley Limited | London | A rating |
| RingMasterUK Ltd | Cardiff | A rating |
| Ringmead Medical Practice | Bracknell | A rating |
| Ringmer Healthcare ltd | Lewes | A rating |
| Ringo Star Trading Ltd/TA Cosmo Liverpool | Liverpool | A rating |
| Ringover Ltd | London | A rating |
| Ringrose Law | Boston | A rating |
| Ringstead Healthcare Ltd | Abingdon | A rating |
| Ringtons Limited | Newcastle upon Tyne | A rating |
| RINGWOOD CHICKEN LTD T/A CHICKEN PLUS | Coventry | A rating |
| Ringwood Medical Practice at Ringwood Medical Centre (ODS code J82039) | Ringwood | A rating |
| Ringwood Visionplus Ltd T/A Specsavers | Ringwood | A rating |
| Rinri Therapeutics Limited | Sheffield | A rating |
| Rinzal Dreams Ltd | Peterborough | A rating |
| Rio Architects Limited | CARDIFF | A rating |
| Rio Beauty Ltd | Burton On Trent | A rating |
| Rio ESG Ltd | London | A rating |
| Rio Mama's Ltd | London | A rating |
| Rio One Limited | Essex | A rating |
| Rio Pizza | Sundarland | A rating |
| Rio Tinto Plc | London | A rating |
| Rio's Gourmet Grill | Manchester | A rating |
| Rio's Piri Piri (Croydon) Limited | Croydon | A rating |
| RIO'S PIRI PIRI WARRINGTON LTD | Warrington | A rating |
| Rio's Piri Piri Wolverhampton Ltd | Birmingham | A rating |
| RioMed limited | Eastleigh | A rating |
| Rioned UK Ltd | Thetford | A rating |
| RIOPAN LTD t/a Radhika Beauty Clinic | Fichley | A rating |
| RIOS BRAZIL | SWINDON | A rating |
| RIOS BRAZILIAN STEAKHOUSE LTD | Egglesclife | A rating |
| Rios Piri Piri Redditch Limited | Redditch | A rating |
| Rios Piri Piri Southampton Ltd | Southampton | A rating |
| Rios Piri Piri Watford Ltd | London | A rating |
| RIOS Piri Piri Wembley Limited | London | A rating |
| Rios Spicy Grills Ltd | Birmingham | A rating |
| RIOS TRADING LTD | Glasgow | A rating |