| Sequoia Genetics Ltd. | London | A rating |
| SEQUOIA HEALTHCARE LTD T/A RODBOURNE PHARMACY | Swindon | A rating |
| Sequoia Investment Management Company Limited | London | A rating |
| Sequoia Organisation Ltd | London | A rating |
| Sequoia Strategy Advisors Limited | Blackpool | A rating |
| Sequoia Transactions | Ascot | A rating |
| SEQURE TECHNOLOGIES UK LTD | Hounslow | A rating |
| Ser Contractor LTD | London | A rating |
| SER SOLUTIONS UNITED KINGDOM LIMITED | London | A rating |
| Sera Global Europe Holdings Limited | London | A rating |
| SERA HOMES LTD | Brentford | A rating |
| SERA HOTEL LTD | Bath and North East Somerset | A rating |
| Sera Neon Limited | London | A rating |
| Serac Technologies Ltd | London | A rating |
| SERAN INFOTECH LTD | Cheam | A rating |
| Serans Limited | Surrey, | A rating |
| SERAPH ESTATES (CARDIFF) LTD | Cardiff | A rating |
| Seraphim Space Camp Accelerator Ltd | London | A rating |
| Seraphim Space Manager LLP | London | A rating |
| Seraphus Limited | London | A rating |
| SERAPID LIMITED | Bury St Edmunds | A rating |
| Serbian Orthodox Church of St John the Baptist | Halifax | A rating |
| Serbian Orthodox Church of St. Sava | London | A rating |
| Serbian Orthodox Parish of Oxford | Oxford | A rating |
| Serbian Orthodox Parish of St. Andrew | Bedford | A rating |
| Serco Ltd t/a Serco Group | Hook | A rating |
| SERCOMM BRITAIN LIMITED | Cheltenham | A rating |
| SERE Limited | Belfast | A rating |
| SEREN HEALTHCARE SOLUTIONS LIMITED | NEWPORT | A rating |
| Seren Plus LTD | Pontypool | A rating |
| Seren Support Services Ltd | PORT TALBOT | A rating |
| SERENA EURO LTD | Ruislip | A rating |
| Serena Investments Limited T/A Holiday Inn Express London Heathrow T5 | Slough | A rating |
| Serenata Care Ltd T/A Two Cedars | Broadstone | A rating |
| Serendib Global Foods Ltd | Witney | A rating |
| Serendip Home Care Limited | New Milton | A rating |
| Serendipity Artists Movement Limited | Leicester | A rating |
| Serendipity Capital UK Services Ltd | London | A rating |
| Serendipity Care and Support Limited | Bridgend | A rating |
| Serendipity Healthcare Ltd | Chesterfield | A rating |
| Serendipity Int Ltd | Twickenham | A rating |
| SERENDIPITY11 LTD | LEICESTER | A rating |
| Serene Care Limited | Milton Keynes | A rating |
| SERENE DENTAL LTD | Telford | A rating |
| SERENE HC UK LTD | Manchester | A rating |
| Serene Health Care Group Ltd | Amesbury | A rating |
| SERENE HOME CARE LIMITED | Hornchurch, London | A rating |
| Serene Scenes Studios Limited | Cambridge | A rating |
| Serene Surroundings | London | A rating |
| Serenissima Energy Ltd | London | A rating |
| Serenity (Derby) Ltd | Derby | A rating |
| Serenity Care - Support Ltd | Bradford | A rating |
| Serenity Care Company | Grantham | A rating |
| Serenity Care Group Ltd | London | A rating |
| SERENITY CONSULTANCY (UK) LTD | Birmingham | A rating |
| Serenity Dental Surgery | Burnham-on-Crouch | A rating |
| SERENITY DINING LIMITED T/a Pho District | London | A rating |
| Serenity Education Group | Eltham | A rating |
| Serenity Homecare Limited | Wolverhampton | A rating |
| Serenity Homes Ltd | Newport | A rating |
| Serenity In Mind Limited | LEICESTER | A rating |
| Serenity One Ltd | Wembley | A rating |
| Serenity One Ltd | London | A rating |
| SERENITY POINT LIMITED | London | A rating |
| Serenity Technologies Ltd. | London | A rating |
| Serenity UK Care Limited | Surrey | A rating |
| Serenity Welfare Ltd | Broxbourne | A rating |
| SERENITYWELLNESS HEALTHCARE LIMITED | NORWICH | A rating |
| Seres Information Technologie Ltd | Epping | A rating |
| SERG Technologies Ltd | London | A rating |
| SERGIO ENTERPRISES LIMITED | Swindon | A rating |
| Sergio Ignacio Reyes Maira | Inverness | A rating |
| Sergison Bates Architects | London | A rating |
| SERI LTD | Pontypridd | A rating |
| Seric Steel Ltd | Maidenhead | A rating |
| Serica Energy PLC | Aberdeen | A rating |
| Seriderm UK Limited | Norwich | A rating |
| Serie Architects Ltd | London | A rating |
| Serimax ltd | Evanton | A rating |
| Serious Facilities | GLASGOW | A rating |
| Serious Fraud Office | London | A rating |
| SERIOUS INTERNATIONAL LIMITED | WELLS | A rating |
| Serious ltd | London | A rating |
| Serious Stages Ltd | Wells | A rating |
| Serious Stuff Limited | London | A rating |
| Sernova Financials Limited | London | A rating |
| Sero Life Ltd | Cardiff | A rating |
| Serone Capital Management LLP | London | A rating |
| SEROTI LTD | Stratford-Upon-Avon | A rating |
| Serra Consultancy Services Ltd | London | A rating |
| Serrala UK Limited | London | A rating |
| Serrula Research Limited | Fulham | A rating |
| SERS Energy Solutions Ltd | Caerphilly | A rating |
| SERTSARI PRIVATE TRAINING STUDIO LTD | Richmond | A rating |
| Serum Life Sciences Limited | London | A rating |
| SERV INTERNATIONAL LIMITED | London | A rating |
| Serv IT Limited | Laindon | A rating |
| Servant Trust | Belfast | A rating |
| Servants of the Word | Acton | A rating |
| Servatech Ltd | Leeds | A rating |
| Servcorp UK Ltd | London | A rating |
| Serve Homecare Ltd | Stevenage | A rating |
| SERVE LOCAL LIMITED | Leeds | A rating |
| SERVE ONLINE LTD | Wantage | A rating |
| Serve365 | Laggan | A rating |
| SERVECO SERVICES LTD | Birmingham | A rating |
| Serveo Industria UK Ltd | Ellesmere Port | A rating |
| SERVERSCOM UK LTD | Guildford | A rating |
| SERVERSHOPPING.COM LTD | Hampshire | A rating |
| SERVESIFY LTD | LONDON | A rating |
| Servesoul Limited | London | A rating |
| Service Box Group Limited | Hove | A rating |
| Service Express Europe Limited | Bedford | A rating |
| Service Management Integrations Ltd | London | A rating |
| Service to the Aged | London | A rating |
| Service Works Global Limited | London | A rating |
| Service Works Global Ltd | London | A rating |
| ServiceCo South Ltd | Cardiff | A rating |
| Servicehub Consultant Limited | London | A rating |
| ServiceNow UK Limited | Staines Upon Thames | A rating |
| ServicePower Business Solutions Ltd | Stockport | A rating |
| Servicepower Ltd. T/A SEBA Developments | Keighley | A rating |
| ServiceRocket Limited | London | A rating |
| Services Design Associates Limited | Sheffield | A rating |
| Services Design Solution Ltd | Plymouth | A rating |
| Services for Landlord Ltd | Ashford | A rating |
| Services for NRI Ltd | London | A rating |
| Services Machinery & Trucks Ltd | Cambridge | A rating |
| ServiceTracker | Caerphilly | A rating |
| SERVICEWORLD LIMITED | London | A rating |
| Servicom (High Tech) Limited | Redditch | A rating |
| SERVICOM (HIGH TECH) LIMITED | Worcestershire | A rating |
| Servier Laboratories Limited | Stoke Poges | A rating |
| Servify UK Limited | Hammersmith | A rating |
| SERVION IT RESOURCING LTD | London | A rating |
| Serviont Global Solutions Europe Ltd | Reading | A rating |
| Servis Facilities Limited | London | A rating |
| Servis Personnel Ltd | Nottingham | A rating |
| Servita Professional Services (UK) Limited | London | A rating |
| Servlane Limited | London | A rating |
| Servlite UK Limited | Manchester | A rating |
| Servo Securities Ltd | Leeds | A rating |
| Servoca Nursing and Care Ltd trading as Servoca Complex Care | Essex | A rating |
| Servomex Group Limited | Crowborough | A rating |
| servotest testing system ltd | Egham | A rating |
| Servy Technologies UK Limited | London | A rating |
| Servzon Technologies Limited | Stockport | A rating |
| SES Avocet Ltd | Norwich | A rating |
| Ses Bifold Ltd | Slough | A rating |
| SES Care Homes Ltd | West Molesey | A rating |
| SES SECURITY SERVICES LTD | Ilford | A rating |
| Sesame Access Systems Ltd | West Byfleet | A rating |
| SESAME JACK LTD | LONDON | A rating |
| Sesame-UK Limited | Basingstoke | A rating |
| Seskinore Poultry Farm Ltd | Omagh | A rating |
| SESN GB LIMITED T/A GB GIFTS AND SOUVENIRS | London | A rating |
| Sessay Cricket Club | THIRSK | A rating |
| SESSION FOOD UK LTD | Dundee | A rating |
| Sessions Arts Club Ltd | London | A rating |
| Sessions Market Limited | London | A rating |
| Sessun Ltd | London | A rating |
| Sestini & Co Ltd | Bristol | A rating |
| SETARA LTD | ROMFORD | A rating |
| Setec Consulting Engineers Ltd | Birmingham | A rating |
| SETEX GLOBAL SOURCING LTD | London | A rating |
| SETFIELD LIMITED T/A GLOBE CHEMIST | LONDON | A rating |
| Setfords Law Ltd | Guildford | A rating |
| Setfords Technology Solutions Ltd | Guildford | A rating |
| Seth Marine Consultants Ltd | Maidstone | A rating |
| Seth White Architects | St Albans | A rating |
| SETH'S HEALTHCARE LIMITED | Leeds | A rating |
| Sethi Private Ltd | Manchester | A rating |
| SETHIA LONDON LIMITED | LONDON | A rating |
| SETI HOLDINGS LIMITED | Tunbridge Wells | A rating |
| Setna iO Ltd | Watford | A rating |
| Setteo Ltd | London | A rating |
| Setting Steps Support Services Ltd | Liverpool | A rating |
| SETTLE CRICKET CLUB | SETTLE | A rating |
| SEUPB | Belfast | A rating |
| Seure Glaze UK Home Improvements LTD T/A Secure Glaze Group UK | Birmingham | A rating |
| SEV SERVICES LTD | Grays | A rating |
| Seva Care (Respite and Residential Services) Limited | London | A rating |
| Seva Education, Health & Care Ltd | London | A rating |
| SEVA LINE LTD | BOLTON | A rating |
| SEVA PATIDAR LIMITED | London | A rating |
| Seva Tech Limited | London | A rating |
| Sevacare (UK) Limited | Wolverhampton | A rating |
| Seval Zelal Ltd | Cardiff | A rating |
| Sevaline Carehomes Limited t/a Heaton House Care Home | BOLTON | A rating |
| SEVAmor Associates Ltd | Newark | A rating |
| SEVCAN HEALTH TOURISM CONSULTANCY LTD | Liverpool | A rating |
| SEVDOGG LTD | London | A rating |
| Seven (Derby) Limited | Derby | A rating |
| Seven (Derby) Ltd | Derby | A rating |
| SEVEN @ ELEVEN LTD | Wellingborough | A rating |
| Seven 11 Express Ltd | London | A rating |
| Seven 2 Eleven Food & Wine Limited | London | A rating |
| Seven Baring Automotive Ltd t/a AMC Vehicle Maintenance Services | London | A rating |
| Seven Bridges Genomics UK Limited | London | A rating |
| SEVEN BRIDGES LIMITED | London | A rating |