| SCH Studio LTD | Bolton | A rating |
| Schaeffler (UK ) Ltd | Sheffield | A rating |
| Schappit Ltd. | Sileby | A rating |
| Schawk UK Limited | Salford | A rating |
| Schawk UK ltd | Salford | A rating |
| Schawpark Ltd t/a Tartan Tikka TIkka | Alloa | A rating |
| Schedl Automotive System Service Ltd | Kidlington | A rating |
| Scheff Foods Ltd | Smethwick | A rating |
| Scheibye Trading Ltd | London | A rating |
| Scheidt & Bachmann UK Ltd | Chessington | A rating |
| SchemeServe Limited | Chelmsford | A rating |
| Schengen Visa Agents Ltd | Harrow Wealdstone | A rating |
| Schenk UK Ltd | Widnes | A rating |
| Schillings International LLP | London | A rating |
| SCHINDLER LIMITED | Addlestone | A rating |
| Schindlers Uk Limited | London | A rating |
| Schjodt LLP | London | A rating |
| SCHL Limited | Aberdeen | A rating |
| Schleich UK Ltd | Watford | A rating |
| Schlumberger Cambridge Research Limited | Cambridge | A rating |
| Schlumberger Oilfield UK Limited | Crawley | A rating |
| Schlumberger Oilfield UK Ltd | Westhill | A rating |
| Schmaltz Ltd | London | A rating |
| SCHMART LIMITED | London | A rating |
| Schmidt & Bender (UK) Ltd. | Ashford | A rating |
| Schmidt Groupe UK Ltd | London | A rating |
| Schmitz Cargobull (U.K.) Limited | Manchester | A rating |
| SCHMITZ ROTARY ENGINEERING LTD | BIRMINGHAM | A rating |
| Schneider Electric Systems UK Limited | Telford | A rating |
| Schneider Electric UK Ltd | Telford | A rating |
| Schnitzel Forever Ltd | London | A rating |
| SCHNITZEL HEAVEN LTD | London | A rating |
| Schoeller Allibert Limited | Winsford | A rating |
| Schoen Clinic London Ltd | London | A rating |
| Schoen Clinic UK Limited | Sutton Coldfield | A rating |
| SCHOENI PRESENTS LTD | London | A rating |
| Schofield and Bloom Ltd | Manchester | A rating |
| Scholar Financial Services Ltd | Hounslow | A rating |
| Scholars' Education Trust Central Team | St Albans | A rating |
| Scholium Group plc | London | A rating |
| Scholl's Wellness Company Ltd | Bracknell | A rating |
| Schonfeld Strategic Advisors (UK) LLP | London | A rating |
| School Channel Ltd | Bath | A rating |
| School for CEOs Ltd | Glasgow | A rating |
| School Improvement Liverpool Limited | Liverpool | A rating |
| School of Business and Management Ltd | London | A rating |
| School of Business and Technology London Limited | London | A rating |
| School of Coding Limited | Wolverhampton | A rating |
| School of Hard Knocks | London | A rating |
| School of Oriental and African Studies | London | A rating |
| School of Sign Language Limited | Blackburn | A rating |
| School Of Sufi Teaching | London | A rating |
| School of Wok Ltd | London | A rating |
| School Run Ltd | london | A rating |
| School Sisters of Notre Dame CIO | Liverpool | A rating |
| SCHOOL STREET MINI MARKET LIMITED | BACUP | A rating |
| School-Home Support Service (UK) | London | A rating |
| Schoola Limited | Sutton | A rating |
| Schoolblazer Limited | Oundle | A rating |
| Schoolgate Accounting Services Limited | Wimbeldon | B rating |
| Schools Counselling Partnership Ltd | London | A rating |
| SCHOOLS OF KING EDWARD VI IN BIRMINGHAM | BIRMINGHAM | A rating |
| SCHOONER INN | SWANSEA | A rating |
| SCHOONER WINES | ST HELENS | A rating |
| SCHOTTEN & HANSEN UK LTD. | London | A rating |
| Schparkly Creative Ltd | Harrow | A rating |
| Schrader Electronics Ltd | Antrim | A rating |
| Schreiber Care UK Ltd | GREATER LONDON | A rating |
| Schreiber Foods UK Limited | Stonehouse | A rating |
| Schroder Investment Management Limited | London | A rating |
| Schroders Greencoat LLP | London | A rating |
| Schrodinger Technologies Limited | London | A rating |
| Schubert UK Limited | Birmingham | A rating |
| Schueco UK Limited | Milton Keynes | A rating |
| Schuh Ltd | Livingston | A rating |
| Schulte Hospitality Group UK Limited | London | A rating |
| SCHUMACHER PACKAGING LTD | BIRMINGHAM | A rating |
| Schumann International Services Limited | London | A rating |
| Schunk Carbon Technology Limited | Pudsey | A rating |
| SCHUNK Intec Limited | Milton Keynes | A rating |
| Schwarzthal Tech Ltd | Stanmore | A rating |
| Schweitzer Engineering Laboratories UK Limited | Stafford | A rating |
| Schwing Stetter (UK) Ltd | Marlow | A rating |
| Sci-Net Limited | Oxfordshire | A rating |
| Sciamed Ltd | Alford | A rating |
| Science (UK) Limited | London | A rating |
| Science Applications International Corporation (UK) Ltd | Guildford | A rating |
| Science Atomic UK CIC | London Colney | A rating |
| Science Based Targets Initiative | London | A rating |
| Science Care Limited | Dunstable | A rating |
| Science in Sport Ltd | Blackburn | A rating |
| Science Machine Ltd | London | A rating |
| Science Media Centre | London | A rating |
| Science Museum Group | London | A rating |
| Science Recruitment Group Ltd | Luton | A rating |
| SCIENCO LIMITED | Bristol | A rating |
| SCIENION (UK) Limited | Portsmouth | A rating |
| Sciensus Pharma Services Limited | Burton on Trent | A rating |
| Scientia Ltd | Cambridge | A rating |
| Scientific Age Research and Testing Lab Ltd | Ilford | A rating |
| Scientific Beta (Europe) Ltd | London | A rating |
| Scientific Committee on Antarctic Research (t/a SCAR) | Cambridge | A rating |
| Scientific Drilling Controls Limited | Dyce | A rating |
| Scientific Education Support (SES) Ltd | London | A rating |
| Scientific Infra & Private Assets (Europe) Ltd | London | A rating |
| SCIENTIFIC INFRA & PRIVATE ASSETS | London | A rating |
| Scientific Laboratory Supplies | Hessle | A rating |
| Scientifica Ltd | Uckfield | A rating |
| Sciforma UK Ltd | Leeds | A rating |
| Scimitar Care Hotels PLC | Potters Bar | A rating |
| Scindo Ltd | London | A rating |
| Scinomed LTD | Harrogate | A rating |
| Scintacor Ltd | Cambridge | A rating |
| SCISSERO LAW LTD | London | A rating |
| Scissero Ltd | London | A rating |
| Scissett Recruitment Group Limited | Huddersfield | A rating |
| Scissors Cut Barbers Ltd | London | A rating |
| SCISSORS CUT LTD | MORDEN | A rating |
| Scitech Engineering Limited | Godalming | A rating |
| Scitech Engineering Ltd | Godalming | A rating |
| SCITEK Consultants Ltd | Derby | A rating |
| Sciton UK Limited | London | A rating |
| SCJ Picnic to Korea LTD | London | A rating |
| SCL Advisory Limited | London | A rating |
| SCL FI-SERVICES LTD | Newcastle under Lyme | A rating |
| SCM Group (UK) Limited | Bulwell | A rating |
| SCN Trading Ltd | Basildon | A rating |
| Scntrum Services Limited | Stanmore, | A rating |
| Scobic Ltd | London | A rating |
| Scobie Llarn LTD T/A Boxer | Leeds | A rating |
| SCODEF LTD T/A SCODEF CARE | Kent | A rating |
| Scoffable Ltd | Livingston | A rating |
| Scolmore International Limited | Tamworth | A rating |
| Scone Polo Team | Midhurst | A rating |
| Scoonie Medical Practice | Leven | A rating |
| Scoops Portswood Limited | Southampton | A rating |
| Scoops Retail Ltd | Bristol | A rating |
| SCOPE CARE SERVICES LTD | Buckinghamshire | A rating |
| SCOPE DESIGN CONSTRUCTION LIMITED | London | A rating |
| SCOPE EVENTS ENTERTAINMENT LIMITED | Birmingham | A rating |
| Scope Events Ltd | Luton | A rating |
| Scope Inspection Limited | London | A rating |
| Scope Pharma Limited T/A Lords Pharmacy | South Ockendon | A rating |
| Scope Ratings UK Ltd | London | A rating |
| Scope Security Ltd | Oxford | A rating |
| Scopely UK Limited | London | A rating |
| Scopeworker Limited | London | A rating |
| Scopitones | Hove | A rating |
| SCOPUS ASBESTOS COMPLIANCE LTD | Ossett | A rating |
| SCOR SE - UK Branch | London | A rating |
| Scorchsoft Ltd | Birmingham | A rating |
| Score Genius Technology Ltd | London | A rating |
| Score Group Ltd | Peterhead | A rating |
| Score Holdings Limited | London | A rating |
| SCORNIK GERSTEIN LLP | LONDON | A rating |
| SCORPAY CONSULTANCY LTD | Manchester | A rating |
| Scorpio UK Limited | LONDON | A rating |
| Scorpius Digisoft Private Limited | Burton On Trent | A rating |
| Scorpos Ltd | Watford | A rating |
| Scorton Care Ltd | Scorton | A rating |
| Scorus Solutions Limited | GLASGOW | A rating |
| SCOT CONVENIENCE LTD | Glasgow | A rating |
| Scot Denture Clinic Ltd | Edinburgh | A rating |
| Scot Energy 4 U Limited | Dunfermline | A rating |
| SCOT REMOVALS GLASGOW LIMITED | Glasgow | A rating |
| Scot Young Research | Stourbridge | A rating |
| Scotbeef Ltd | Stirling | A rating |
| Scotch Partners LLP | London | A rating |
| Scotdrain Limited | Romanno Bridge | A rating |
| Scotia Chiropractic Ltd | St Boswells | A rating |
| Scotia Gas Networks Ltd t/a SGN | Horley | A rating |
| SCOTIA HANDLING SERVICES LIMITED | Linwood | A rating |
| Scotia Stores | Tunstall | A rating |
| Scotia World Limited | Edinburgh | A rating |
| SCOTITECH SOLUTIONS LIMITED | Lanarkshire | A rating |
| SCOTLAND SWEET CENTRE | GLASGOW | A rating |
| Scotland's Buddhist Vihara | Glasgow | A rating |
| Scotland's Rural College | Edinburgh | A rating |
| Scotlanz Limited | Innerleithen | A rating |
| Scotline Limited | Romford | A rating |
| ScotLive Shellfish Ltd. | Alness | A rating |
| ScotNursing & medical Services | Glasgow | A rating |
| ScotRail Trains Ltd | Glasgow | A rating |
| Scotsman Group PLC | Glasgow | A rating |
| Scotstounhill Post Office | GLASGOW | A rating |
| Scotstown Medical Group | Aberdeen | A rating |
| SCOTT & STINSON ENGINEERING LTD | COLERAINE | A rating |
| Scott and Chase Hair & Beauty Ltd | Amersham | A rating |
| Scott and Chase Hair & Beauty Ltd T/A Gatsby & Miller | Amersham | A rating |
| SCOTT BADER UK LIMITED | Wellingborough | A rating |
| Scott Bargains Limited | Dalkeith | A rating |
| Scott Brownrigg Ltd | Guildford | A rating |
| Scott Dunn Limited | London | A rating |
| Scott Fleary Productions Ltd | London | A rating |
| Scott Health & Safety Limited | Skelmersdale | A rating |
| SCOTT HOBBS PLANNING LTD | Edinburgh | A rating |
| Scott Logic Limited | Newcastle Upon Tyne | A rating |
| SCOTT MARINE CONSULTANTS LTD | Milton Keynes | A rating |
| Scott Road Medical Centre | Selby | A rating |
| SCOTT STIRLING SERVICES LTD | Saltcoats | A rating |