| Spinon Ltd | Colchester | A rating |
| SPINROUTE LIMITED | Cranleigh | A rating |
| Spinster Films Limited | London | A rating |
| Spintex Engineering Limited | Oxford | A rating |
| Spinway International Limited | London | A rating |
| Spira Films Limited | Surrey | A rating |
| SPIRAL PACKS (LONDON) LTD | DARTFORD | A rating |
| SPIRAL80 LTD | London | A rating |
| Spiralinks Limited | Wyboston | A rating |
| SpiralWeld Ltd | Southampton | A rating |
| SPIRAX SARCO LIMITED | CHELTENHAM | A rating |
| Spire Accountants Ltd | East London | A rating |
| SPIRE CARE LTD | Dartford | A rating |
| Spire Care Ltd. | Dartford | A rating |
| Spire Global UK Limited | Glasgow | A rating |
| Spire Healthcare Ltd | London | A rating |
| Spire Home Care & Training Ltd | Woodford Avenue, Ilford | A rating |
| Spire Homecare 2016 Ltd t/a Spire Homecare | Salisbury | A rating |
| Spire Management Limited | London | A rating |
| Spire Vets Limited | Chesterfield | A rating |
| Spires Engineering Consultancy Ltd | London | A rating |
| SPIREZ LTD | Cheltenham | A rating |
| Spirit Bridge Limited | Manchester | A rating |
| Spirit Energy Production UK Limited | Windsor | A rating |
| Spirit Healthcare Ltd | Leicester | A rating |
| Spirit Home Care Limited | Leicester | A rating |
| Spirit Hospitality Limited | Pershore | A rating |
| Spirit It Services Ltd | Ilford | A rating |
| Spirit Motor Company Limited | Bolton | A rating |
| Spirit Motorcycles Limited | Yeovil | A rating |
| SPIRIT OF 1873 LTD T/a Wakefield Trinity RLFC | Wakefield | A rating |
| Spirit Of 1873 Ltd t/a Wakefield Trinity Wildcats | Wakefield | A rating |
| Spirit Primary Care Limited | Leicester | A rating |
| Spirit Solar Limited (t/a Spirit Energy) | Reading | A rating |
| Spirit UK Managed Services Limited | ILFORD | A rating |
| Spirit Untamed Limited | London | A rating |
| Spirit Zone Ltd | Salford | A rating |
| Spiritrade Limited | London | A rating |
| Spirotech SRD Group Ltd | Sawtry | A rating |
| SPITAFIELD FOODS LTD | London | A rating |
| SPITAL LOCAL STORE LIMITED | ABERDEEN | A rating |
| Spitfire Audio Holdings Limited | London | A rating |
| Spitfire Creative Technologies | MARGATE | A rating |
| Spitfire Inbound Ltd | London | A rating |
| Spitfire Network Services Limited | London | A rating |
| Spitfryer Public House Ltd t/a Saffron Restaurant | Castle Bromwich | A rating |
| Spittal Pond Limited | London | A rating |
| Spixworth Dental Practice | Spixworth | A rating |
| SPJ Climbing Two Limited | London | A rating |
| SPK Bushey Ltd | Harrow | A rating |
| SPKA LIMITED T/A RUGBY FISH BAR | RUGBY | A rating |
| SPL 70 Limited | Dagenham | A rating |
| SPL BUILDERS LIMITED | Wolverhampton | A rating |
| SPL CONVENIENCE STORE LTD T/A Naseby Village Store | Northampton | A rating |
| SPL Trading LTD | London | A rating |
| SPLACE.WORLD LTD | Macclesfield | A rating |
| Splash Business Intelligence UK Ltd | Brighton | A rating |
| Splash Damage Ltd | Bromley | A rating |
| Splash Day Nursery Limited | London | A rating |
| Splatter Art Studio Ltd | Glasgow | A rating |
| Splend Ltd | London | A rating |
| Splendent Care Ltd | East Croydon | A rating |
| Splendid (West London) Limited | London | A rating |
| Splendid Care Solution | LEEDS | A rating |
| Splendid Chai Limited | Watford | A rating |
| Splendid Communications Ltd | London | A rating |
| Splendid Healthcare Limited | Watford | A rating |
| Splendid Hospitality Group LLP | Watford | A rating |
| Splendid Supported Accommodations Limited | Ashford | A rating |
| Splendid.Co.UK Limited | London | A rating |
| Splendour Care Ltd | Stanwell | A rating |
| Splento Ltd | Sunnigdale | A rating |
| Splice Post Limited | London | A rating |
| Spliced Inc Limited | Altrincham | A rating |
| Spliethoff - BigLift UK Ltd | Westerham | A rating |
| Split Second Research Limited | Worcester | A rating |
| Splitit UK Ltd | London | A rating |
| SPLYT TECHNOLOGIES LTD | London | A rating |
| SPM (STORES) LTD | STOWMARKET | A rating |
| SPM Plastics Limited t/a UPG International | Mid Glamorgan | A rating |
| SPM PRIVATE LIMITED | Cullompton | A rating |
| SPM Quality Care Ltd | Sutton-in-Ashfield | A rating |
| Spon Lane Chippy Ltd | West Bromwich | A rating |
| Sponge Group Limited | Plymouth | A rating |
| SPONSICORE LIMITED | London | A rating |
| Sponsorworks Ltd | London | A rating |
| Spoon Cereals UK Ltd | Barnsley | A rating |
| Spoon Guru Limited | London | A rating |
| Spooner Industries Limited | Ilkley | A rating |
| Spooner Vicars Bakery Systems | Golborne | A rating |
| Spoormaker and Partners UK Ltd | Maidenhead | A rating |
| Spoortech Ltd | Purfleet | A rating |
| SPOORTHI TECHNO SOLUTIONS LTD | Nottingham | A rating |
| SPORADIC GROUP LIMITED | London | A rating |
| Spore London Limited | London | A rating |
| SporeGen Limited | London | A rating |
| Sport & Travel Services Ltd | London | A rating |
| Sport Aberdeen | Aberdeen | A rating |
| Sport AitchQ Ltd | London | A rating |
| Sport Changes Life Foundation | Belfast | A rating |
| SPORT ERP LIMITED | LOUGHBOROUGH | A rating |
| SPORT MASSAGE LEICESTER LTD | Leicester | A rating |
| Sport Structures Ltd | Birmingham | A rating |
| Sport Taekwondo UK LImited | Manchester | A rating |
| Sport:80 Services Limited T/A Sport:80 | Sheffield | A rating |
| SPORTEX AL LP | Grantham | A rating |
| Sportex Clothing Company Limited | Nelson | A rating |
| Sportfact Ltd t/a Guildford Flames | Guildford | A rating |
| Sportfive | Altrincham | A rating |
| Sporting Club Leigh Limited | LEIGH | A rating |
| Sporting Data Limited | Brighton | A rating |
| Sporting Index Ltd | London | A rating |
| SPORTING INSIGHTS LTD | GUILDFORD | A rating |
| Sporting Knowledge Solutions Ltd | Manchester | A rating |
| Sporting News Enterprises UK Limited | London | A rating |
| Sporting Solutions Services Limited | London | A rating |
| SportInspired | London | A rating |
| Sportlight Technology Ltd | London | A rating |
| Sportority UK Limited | London | A rating |
| Sportquake Limited | London | A rating |
| Sportradar UK Limited | London | A rating |
| Sports and Spinal Physio LTD | Brentwood | A rating |
| Sports Betting Community Ltd | London | A rating |
| SPORTS CAFE (BFD) LIMITED | Bradford | A rating |
| Sports Cars (England) Acquisitions Limited | Malvern | A rating |
| Sports Dispute Resolution Panel Ltd (t/a Sport Resolutions (UK)) | London | A rating |
| SPORTS EDUCATION ACADEMY LTD | London | A rating |
| Sports Entertainment Group (UK) Limited | London | A rating |
| Sports For Champions UK CIC | WIRRAL | A rating |
| Sports Heroes Limited t/a Education 1st | Bristol | A rating |
| Sports Information Services | Salford | A rating |
| SPORTS INVEST UK LIMITED | LONDON | A rating |
| SPORTS LOUNGE OADBY LIMITED | LEICESTER | A rating |
| Sports Loyalty Card Limited | Belfast | A rating |
| Sports Loyalty Card Limited t/a Reward | London | A rating |
| Sports Revolution Ltd | LONDON | A rating |
| Sports Supplements Ltd | Colchester | A rating |
| Sports Travel & Hospitality Limited | Richmond | A rating |
| SPORTS WORLD LONDON LIMITED | Goodmayes | A rating |
| Sportsafe UK Ltd | Severalls Industrial Park | A rating |
| sportscotland | Glasgow | A rating |
| Sportscover Europe Limited | LONDON | A rating |
| SportsPro Limited | Edinburgh | A rating |
| SportsPro Media Ltd | London | A rating |
| Sportsultants | London | A rating |
| Spot On Accountants Ltd | Watford | A rating |
| Spot on computers Limited | Rochdale | A rating |
| spot on minds Ltd | London | A rating |
| SPOT ON VEHICLE MANAGEMENT LTD | WEMBLEY | A rating |
| Spot promotions LTD | Bury | A rating |
| Spot Ship Exchange Holdings Ltd | Chester | A rating |
| Spot-on Healthcare Ltd | CORBY | A rating |
| Spotify Limited | London | A rating |
| Spotless AI Limited | Wolverhampton | A rating |
| Spotless Garments Ltd | Milton Keynes | A rating |
| SPOTLIGHT HEALTHCARE SERVICES LTD | Westcliff-on-Sea | A rating |
| SPOTLIGHTGB LTD | Birmingham | A rating |
| Spotlightsportsgroup | London | A rating |
| Spotqa Limited | London | A rating |
| Spotta Limited | Cambridge | A rating |
| Spotted Cow Farnham Ltd | Farnham | A rating |
| Spotted Zebra Ltd | Tunbridge wells | A rating |
| Spottitt Ltd | Harwell | A rating |
| SPP Transport Limited | Uxbridge | A rating |
| SPP CONVENIENT GROUP LIMITED | Letchworth Garden City | A rating |
| SPP PUMPS LIMITED | READING | A rating |
| SPPARC Limited | London | A rating |
| SPPF Limited | London | A rating |
| SPR STAR LTD | Peterborough | A rating |
| Sprak Limited | Chalfont St. Giles | A rating |
| Spratley & Partners Limited | Henley on Thames | A rating |
| Spraybooth Technology Ltd | Sudbury | A rating |
| SPREAD BUSINESS LTD | London | A rating |
| Spread-a-Bale Ltd | Deeside Industrial Estate | A rating |
| SpreadCo Ltd | Northwood Hills | A rating |
| Spreadex Limited | St Albans | A rating |
| Spreetail UK Limited | Leighton Buzzard | A rating |
| Sprift Technologies Ltd | London | A rating |
| SPRIGHTLY SERVICES LIMITED | London | A rating |
| Spring Bliss (UK) Consulting Company Ltd | London | A rating |
| Spring Bridge UK LLP | London | A rating |
| Spring Che | Chippenham | A rating |
| SPRING CONSULT UK LTD | LONDON | A rating |
| spring corner veterinary centre | bournemouth | A rating |
| Spring Enterprises NW Ltd | Liverpool | A rating |
| Spring Financial Group Ltd | Guildford | A rating |
| Spring Fountain (Private) Limited | Blackpool | A rating |
| Spring Gardens Group Medical Practice | Worcester | A rating |
| Spring Hall Group Practice Ltd | Halifax | A rating |
| SPRING HILL PHARMA LIMITED | Birmingham | A rating |
| Spring Impact | Southwark | A rating |
| SPRING MEADOWS (CARE) LIMITED | Swansea | A rating |
| Spring Pharmacy Ltd | London | A rating |
| Spring Production Limited | Manchester | A rating |
| Spring Recruitment Solutions Limited | Milton Keynes | A rating |
| Spring Shades Ltd | LEICESTER | A rating |
| SPRING SIGMA LTD | London | A rating |
| Spring Staffing Limited | Manchester | A rating |
| Spring Studios Ltd | LONDON | A rating |
| SPRING SUCCESS HOME CARE LIMITED | COLCHESTER | A rating |