| South Street Surgery | Bishops Stortford | A rating |
| South Tees Hospital NHS Foundation Trust | Middlesbrough | A rating |
| South Thames Colleges Group | Kingston upon Thames | A rating |
| South Thames Colleges Group | Kingston-Upon Thames | A rating |
| South Tyneside and Sunderland NHS Foundation Trust | Sunderland | A rating |
| South Tyneside Council | South Shields | A rating |
| SOUTH UK FOODS LTD | Bournemouth | A rating |
| South Wales Education Centre Limited | Cardiff | A rating |
| South Wales Industrial Equipment Limited | Port Talbot | A rating |
| South Wales Industrial Valves Services Limited | Swansea | A rating |
| South Warwickshire General Hospitals NHS Trust | Warwick | A rating |
| South Warwickshire GP Federation | Leamington Spa | A rating |
| South West Care Homes Limited | Plymouth | A rating |
| SOUTH WEST CARS PRIVATE HIRE LTD | London | A rating |
| South West Chicken Sexers Limited | Stratford-Upon-Avon | A rating |
| South West Coaches Ltd | Yeovil | A rating |
| South West Dental Ltd | Hampshire | A rating |
| South West Engineering Ltd | Castle Douglas | A rating |
| South West Environmental Parks Ltd | Paignton | A rating |
| SOUTH WEST ESSEX & SETTLEMENT REFORM SYNAGOGUE | ILFORD | A rating |
| South West Essex Community Education Trust Limited | Grays | A rating |
| South West Home Care Ltd | Chippenham | A rating |
| South West Larder Limited | North Petherton | A rating |
| South West London & St George's Mental Health NHS Trust | London | A rating |
| South West London Integrated Care Board | Wimbledon | A rating |
| South West London Law Centres | Croydon | A rating |
| South West Manchester Cricket Club | Manchester | A rating |
| South West Norse Ltd | Exeter | A rating |
| South west power promotions ltd | St Austell | A rating |
| South west pubs Ltd | Andover | A rating |
| South West Regional Assessment Centre Ltd (SWRAC) | Wimborne | A rating |
| South West Telecommunications Ltd | Truro | A rating |
| SOUTH WEST TYRE RECYCLING LTD | SALTASH | A rating |
| South West Wildlife Fundraising Ltd | Exeter | A rating |
| South West Yorkshire Partnership NHS Foundation Trust | Wakefield | A rating |
| South West Youth Ministries | Woodbury Salterton | A rating |
| South Western Ambulance Service NHS Foundation Trust | Exeter | A rating |
| South Western Railway Limited | London | A rating |
| SOUTH WIGHT MEDICAL PRACTICE | NEWPORT | A rating |
| South Wigston Health Centre | South Wigston | A rating |
| South Wingfield Cricket Club | Derbyshire | A rating |
| SOUTH WOLD NURSING HOME | LINCOLNSHIRE | A rating |
| South York Multi-Academy Trust | YORK | A rating |
| South Yorkshire Care Services Ltd | Sheffield | A rating |
| South Yorkshire Properties Services Ltd | Sheffield | A rating |
| SOUTH YORKSHIRE SUB LTD T/A SUBWAY | Sheffield | A rating |
| Southall Baptist Church | Southall | A rating |
| Southall Black Sisters | Southall | A rating |
| SOUTHALL COMMUNITY ALLIANCE | Southall, | A rating |
| SOUTHALL DESHI BAZAR LTD | Southall | A rating |
| Southall Enterprise Business Park Limited | Southall | A rating |
| SOUTHALL FLAVOURS LTD | Southall | A rating |
| SOUTHALL LONDON GLAZING LTD | Southall | A rating |
| Southall Medical Centre | Southall | A rating |
| SOUTHALL RESTAURANTS LONDON LTD | Southall | A rating |
| Southall Travel Limited | London | A rating |
| Southampton Chinese Christian Church | Southampton | A rating |
| Southampton City Centre Specsavers Hearcare Limited | Southampton | A rating |
| Southampton City Council | Southampton | A rating |
| Southampton Container Terminals Limited trading as DP World Southampton | Southampton | A rating |
| Southampton Engineering Training Association Limited (The) | Southampton | A rating |
| SOUTHAMPTON FOOTBALL CLUB | SOUTHAMPTON | A rating |
| Southampton Freight Services Ltd | Southampton | A rating |
| Southampton Medina Mosque Trust Limited | Southampton | A rating |
| Southampton Primary Care Limited | Southampton | A rating |
| Southampton Row Hotel LLP T/A DoubleTree by Hilton London - West End | London | A rating |
| Southampton Specsavers Hearcare Limited | Totton | A rating |
| Southampton Trading Ltd | Southampton | A rating |
| Southampton Visionplus Ltd T/A Specsavers Opticians | Southampton | A rating |
| Southampton, Isle of Wight and South of England Royal Mail Steam Packet Company Limited | Southampton | A rating |
| Southbank Centre | London | A rating |
| southberg holdings uk ltd | London | A rating |
| Southbourne School of English | Bournemouth | A rating |
| SOUTHBROOK ACCOUNTANTS LIMITED | BRADFORD | A rating |
| Southby Productions LLP | High Wycombe | A rating |
| Southcare Homes | Rottingdean | A rating |
| Southchurch Convenience Store/ Premier | Essex | A rating |
| Southco Manufacturing Limited | Worcester | A rating |
| Southcoast Bay View Ltd | Bournemouth | A rating |
| Southcoast Estates Management Ltd | Southampton | A rating |
| SOUTHCREST CARE 2 LTD | HARROW | A rating |
| Southcrest Nursing Home | Redditch | A rating |
| Southcrest Veterinary Centre | Redditch | A rating |
| SOUTHDOWN SPICE LTD | Harpenden | A rating |
| SOUTHDOWNS CONSTRUCTION LTD | London | A rating |
| SOUTHEAT LTD | London | A rating |
| Southend Cottage Ltd T/A Massom Tandoori | Essex | A rating |
| Southend Drinks Limited | Pitsea | A rating |
| Southend High School for Girls Academy Trust | Southend-on-Sea | A rating |
| SOUTHEND RESTAURANT LIMITED | Southend-on-Sea | A rating |
| Southend Tyres & Autos Ltd | Essex | A rating |
| Southend Vineyard | Southend-on-Sea | A rating |
| SOUTHEND-ON-SEA & EMT C.C | Southend-On-Sea | A rating |
| Southend-on-Sea Borough Council | Southend-on-Sea | A rating |
| Southerly Communications Ltd t/a SBC | London | A rating |
| Southern Aluminium and UPVC | Watford | A rating |
| Southern Aqua Seafoods Ltd | Hungerford | A rating |
| Southern Ayr Ltd | Ayr | A rating |
| Southern Brave Limited T/A Southern Brave | Southampton | A rating |
| Southern Catering Limited T/A The Grill | Uckfield | A rating |
| Southern Communications Limited | Basingstoke | A rating |
| Southern Counties Caring Limited | Crawley | A rating |
| SOUTHERN FACILITY SERVICES LIMITED | SLOUGH | A rating |
| Southern Foods / T/a Madras Flavours Ltd | Hounslow | A rating |
| Southern Grille & Gate Limited | Mitcham | A rating |
| Southern Grove Real Estate Limited | London | A rating |
| Southern Health & Social Care Trust | Portadown | A rating |
| Southern Healthcare (Wessex) Ltd | Dawlish | A rating |
| Southern Healthcare Specialists Limited | Southampton | A rating |
| SOUTHERN HUT LTD | LOWESTOFT | A rating |
| SOUTHERN LAND LONDON LIMITED | London | A rating |
| Southern Logistics Ltd | Surrey | A rating |
| Southern Mart Limited | Kettering | A rating |
| SOUTHERN MEDICAL RESCUE LTD (HENLEY ON THAMES) | Henley On Thames | A rating |
| Southern Quality Solutions Ltd. | Gloucester | A rating |
| Southern Quarter Limited | Salisbury | A rating |
| Southern Right Capital Limited | Tresham | A rating |
| Southern Sailplanes Limited | Hungerford | A rating |
| SOUTHERN SMILES LIMITED | Salisbury | A rating |
| Southern Soft Limited | Elstree | A rating |
| SOUTHERN SPARS (UK) LIMITED | POOLE | A rating |
| Southern Spices Burton Limited | Burton On Trent | A rating |
| SOUTHERN SPICES LEICESTER LIMITED | Leicester | A rating |
| Southern Star Trading Ltd | BOURNEMOUTH | A rating |
| Southern Travel Solutions Ltd | Crawley | A rating |
| Southern Water Services Limited | Worthing | A rating |
| Southern Wind Group Limited | Huddersfield | A rating |
| Southey Capital Ltd | London | A rating |
| Southey Care (Dorset) Limited | Poole | A rating |
| Southey Care Limited | Poole | A rating |
| Southfield Care Home | Stockport | A rating |
| SOUTHFIELD COURT CARE HOME LTD | Huddersfield | A rating |
| Southfield Lane Stores LTD | Bradford | A rating |
| Southfields Physiotherapy Ltd | London | A rating |
| Southgate Medical Ltd T/A Waterhouse Chemist | London | A rating |
| Southgates and The Woottons Surgery | Kings Lynn | A rating |
| Southill Park Cricket Club | Southill Village | A rating |
| SOUTHLAND STORES | WEST SUSSEX | A rating |
| SOUTHLANDS COURT CARE HOMES LTD | HARROW | A rating |
| Southlands Medical Group | Sunderland | A rating |
| Southlodge Care Limited | Mitcham | A rating |
| Southmead & Henbury Family Practice | Bristol | A rating |
| Southmead Stores Ltd | Britsol | A rating |
| SOUTHMILL PROPERTIES GROUP LIMITED | LONDON | A rating |
| Southover Day Nursery Ltd | London | A rating |
| Southover Medical Practice | Torquay | A rating |
| Southpark Glazing Ltd | Rainham | A rating |
| SOUTHPARK LTD T/A THE ROYALE DOSA | SUTTON COLDFIELD | A rating |
| Southpark Residential Home Limited | London | A rating |
| Southpaw Communications Limited | Tunbridge Wells | A rating |
| Southport & Birkdale Cricket Club | Southport | A rating |
| Southport & Ormskirk Hospital (NHS) Trust | Southport | A rating |
| Southport Muslim Society | Southport | A rating |
| SOUTHPORT SMILES LTD | Salisbury | A rating |
| Southshore Global Management Ltd | London | A rating |
| Southside Nursing Home Ltd | Inverness | A rating |
| Southside Partnership (Part of Certitude Support) | London | A rating |
| Southside Specialist Dementia Care Ltd | Birmingham | A rating |
| Southspicefood Limited | Welling | A rating |
| SOUTHTAX SOUTHAMPTON TAXI LTD | Southampton | A rating |
| Southvale Care Ltd. | Southampton | A rating |
| SOUTHVILLE LIMITED | LONDON | A rating |
| SOUTHVILLE STORES | MIDDLESEX | A rating |
| Southwark After-School Club Ltd | Romford | A rating |
| Southwark Council | London | A rating |
| Southwark Disablement Association (SDA) | London | A rating |
| Southways Group Limited | Benfleet | A rating |
| Southwell and Nottingham Diocesan Board of Finance | Southwell | A rating |
| Southwell Dental Care | Nottingham | A rating |
| Southwell Medical Centre | Southwell | A rating |
| Southwell Music Festival | Southwell | A rating |
| Southwest Accessories Limited | Bristol | A rating |
| Southwest Builders (London) Limited | Sutton | A rating |
| SOUTHWEST HAMSEY GREEN LTD | Warlingham | A rating |
| SOUTHWEST PHARMA LIMITED | Cullompton | A rating |
| Southwest Pizza & Burger ltd T/A Fat Pizza | Weston-super-Mare, | A rating |
| SouthWest Smile Centre | Newton Stewart | A rating |
| SOUTHWEST VANS AND COMMERCIALS LTD | Bristol | A rating |
| SouthWestSensor Ltd | Southampton | A rating |
| Southwick Newsagent Ltd | Westbury | A rating |
| SOUTHWOLD DENTAL PRACTICE | Reydon | A rating |
| SOUTHWOLD PIER LIMITED | Southwold | A rating |
| Southworks UK Ltd | London | A rating |
| SOUVENIR AND GIFT STORES SCOT LTD | Glasgow | A rating |
| SOUVLIKE IT LTD | London | A rating |
| Sova Assessment Ltd | London | A rating |
| SOVA HEALTHCARE LEICESTER LTD | Leicester | A rating |
| SOVA SURVEYS LIMITED | BATH | A rating |
| Soventix GmbH | London | A rating |
| Sovereign AI Operations Limited | London | A rating |
| Sovereign Care Ltd | Hailsham | A rating |
| Sovereign Dry Cleaners Ware Ltd | Hertfordshire | A rating |
| Sovereign Films Limited | Cobham | A rating |
| Sovereign Fire & Security Ltd | Bristol | A rating |
| Sovereign Health Partnership | Fareham | A rating |
| Sovereign Life Group Limited | Leeds | A rating |
| Sovereign Links Limited | London | A rating |
| Sovereign Pension Services (UK) Ltd | Wirral | A rating |
| Sovereign Safe Deposit Centres (Harrow) Ltd | Harrow | A rating |
| Sovereign Secure Ltd | Accrington | A rating |