| LONDON SCHOOL OF TRAINING & EDUCATION LTD | London | A rating |
| London Security Guards Ltd | London | A rating |
| LONDON SEVASHRAM SANGHA | LONDON | A rating |
| LONDON SHARED LIMITED | LONDON | A rating |
| London Shogyoji Trust | London | A rating |
| LONDON SHOPFITTERS LIMITED | Rainham | A rating |
| London Sikh Centre | London | A rating |
| London Sivan Kovil Trust | London | A rating |
| LONDON SNOOKER LIMITED | London | A rating |
| London Social Group Ltd | London | A rating |
| London Sol Limited | LONDON | A rating |
| London South Bank University | London | A rating |
| London South Dry Cleaners Limited | Sutton | A rating |
| London South East Academies Trust | Bromley | A rating |
| London Southend Airport Company Limited | Southend on Sea | A rating |
| LONDON SPARE PARTS LTD | london | A rating |
| London Specialist Pharmacy Ltd | Dagenham | A rating |
| London Speech and Language Therapy Services Ltd | London | A rating |
| London Spice F H C Ltd T/A London Spice | Harrow | A rating |
| London Spirit (The Hundred) Limited | LONDON | A rating |
| London Sport | London | A rating |
| London Sport Ltd | London | A rating |
| London Sports Academy Limited | London | A rating |
| London Square Developments Limited | Uxbridge | A rating |
| LONDON SRI MURUGAN TEMPLE | LONDON | A rating |
| London Star Education LTD | London | A rating |
| LONDON STAY APARTMENTS LIMITED | London | A rating |
| London Steel Fabrication Ltd | Barking | A rating |
| London Stock Exchange Group plc | London | A rating |
| London Stone Conservation LTD | Tottenham | A rating |
| London Stone Paving Ltd | Slough | A rating |
| London Strategic Land Limited | London | A rating |
| London Strategy Consulting Ltd | London | A rating |
| London Street Brasserie Ltd | Reading | A rating |
| LONDON STREET INVESTMENT LTD | Dartford | A rating |
| LONDON STREET KITCHEN LTD | Leeds | A rating |
| London Structures Lab | London | A rating |
| London Student Accommodation Ltd | Romford | A rating |
| London Surface Design Limited | LONDON | A rating |
| London Surgical Centre | LONDON | A rating |
| London Symphony Orchestra | London | A rating |
| London Tamil Media Ltd T/A IBC Tamil | South Ruislip | A rating |
| LONDON TATTOO COLLECTIVE LTD | LONDON | A rating |
| London Tea Exchange Limited | London | A rating |
| London Tea Exchange Trade Limited | Dagenham | A rating |
| London Technology Club | Hemel Hampstead | A rating |
| LONDON TECHNTRADE LIMITED | London | A rating |
| LONDON TFC FASHION LTD | Loughton | A rating |
| London Theatre Company Productions Limited | London | A rating |
| LONDON TIGERS | LONDON | A rating |
| London Tikka Kebab | London | A rating |
| London to Brighton electric vehicle rally Ltd | Brighton | A rating |
| London Tokyo Property Services Ltd | London | A rating |
| London Tools Limited | Tooting | A rating |
| LONDON TRADITION LTD | London | A rating |
| LONDON TRADITIONAL WINDOWS LTD | London | A rating |
| LONDON TRAINING COLLEGE LTD | London | A rating |
| London Training Group Limited | Hounslow | A rating |
| London Travel In Limited | London | A rating |
| London Treasury Limited | London | A rating |
| London Trimmings Wholesale Ltd | Tottenham Hale | A rating |
| London Twins LTD | Manchester | A rating |
| LONDON TYRES (LONDON) LTD | LONDON | A rating |
| LONDON UK PROPERTY CONSTRUCTION AND MANAGEMENT LTD T/A LONDON UK PROPERTY | LONDON | A rating |
| London United Busways Ltd | London | A rating |
| LONDON V TRADER LIMITED | Barking | A rating |
| London Venue Group | London | A rating |
| LONDON VENUE is a trading name of LONDON VENUES LTD | London | A rating |
| London Victoria Groups Ltd | London | A rating |
| London Victoria Hotel no2 Ltd T/A DoubleTree By Hilton London Victoria | London | A rating |
| London VIP Group Limited | London | A rating |
| LONDON VISAS & IMMIGRATION SERVICES LTD | Wembley | A rating |
| London Vocational College Limited | Ilford | A rating |
| London Walworth Manor Management Ltd | London | A rating |
| London Web World Limited | Wallington | A rating |
| LONDON WELLNESS CENTRE LIMITED | London | A rating |
| London Wide Construction Ltd | London | A rating |
| London Wine & Food Ltd | London | A rating |
| LONDON WOOTEA LIMITED | ESSEX | A rating |
| LONDON'S CONSTRUCTION LTD | Brigg | A rating |
| LONDON'S PRIDE LTD | Liverpool | A rating |
| LONDON'S PROFESSIONAL ACCOUNTANTS LTD | Croydon | A rating |
| LONDON44 LTD | London | A rating |
| LONDONARIUM LTD | Maidenhead | A rating |
| LONDONCRYO LIMITED | LONDON | A rating |
| Londondaytripz Ltd | London | A rating |
| Londonist DMC Ltd | London | A rating |
| Londonist Estate Agents Ltd | London | A rating |
| Londonist Hospitality Limited | London | A rating |
| Londonium Chamber Ltd | London | A rating |
| LONDONJIP LTD. | New Malden | A rating |
| LONDONMAGICSTORE UK LIMITED | South Ockenson | A rating |
| LondonMetric Property Plc | London | A rating |
| LONDONNEWS (BRISTOL) LTD | BRISTOL | A rating |
| Londonoutsourcing Limited | London | A rating |
| LONDONS COMMUNITY KITCHEN CIC | Harrow | A rating |
| Londonwide Local Medical Committees Limited | London | A rating |
| Londora Ltd | London | A rating |
| Londorf Capital Limited T/A United Green | London | A rating |
| Lone Brothers Properties Ltd | WORCESTER | A rating |
| LONE CARE SERVICES LTD | Caterham | A rating |
| LONE DESIGN CLUB LTD | London | A rating |
| Lone Star Europe Acquisitions Limited | London | A rating |
| Lonelyleap | Greenwich, London | A rating |
| LONG & SON TRADING LIMITED | London | A rating |
| LONG AND PARTNERS GROUP LIMITED | London | A rating |
| LONG AND PARTNERS GROUP LTD | London | A rating |
| Long Arm Investments Limited | Doncaster | A rating |
| Long Buckby Trading Ltd | Long Buckby | A rating |
| Long Catlis Road Surgery | Gillingham | A rating |
| Long Consulting T/A Sincere Immigration | London | A rating |
| Long Controls Limited | Merseyside | A rating |
| Long Copse Developments Ltd | Fordingbridge | A rating |
| Long Feng Foods Ltd | Burgess Hill | A rating |
| Long Harbour Ltd | London | A rating |
| Long Lane Surgery | Coalville | A rating |
| Long Lane Wines Limited | Stanwell | A rating |
| LONG LIFE WINDOWS LTD | Manchester | A rating |
| Long Meadow (Ripon) Limited | Ripon | A rating |
| Long Stratton Medical Partnership | Norwich | A rating |
| Long Sutton Village Shop | Langport | A rating |
| LONG VERE GROUP LTD | Solihull | A rating |
| LONGACRE CARE HOME LTD | WORTHING | A rating |
| Longacre Group International Limited | LONDON | A rating |
| LONGACRES FILLING STATION LTD | Trelawnyd | A rating |
| Longaim Ltd | London | A rating |
| Longboat Special Education Ltd | Newark | B rating |
| Longborough Festival Opera | Moreton-in-Marsh | A rating |
| Longbow Bars and Restaurants | Grindleford | A rating |
| Longbridge Deverill House and Nursing Home | Warminster | A rating |
| Longbrook UK ServCo Limited | London | A rating |
| Longchi Holdings Limited | London | A rating |
| Longcroft School and Sixth Form College | Driffield | A rating |
| LONGDALE FUEL LTD T/A LONGDALE SERVICE STATION ESSO | NOTTINGHAMSHIRE | A rating |
| Longdays (Derby) Limited Trading as Premier Goseley Store | Hartshorne | A rating |
| LONGEVITA LONDON LIMITED | LONDON | A rating |
| Longevity Partners Limited | London | A rating |
| LONGFELLOW REAL ESTATE INVESTMENT MANAGEMENT UK, LIMITED | London | A rating |
| Longfellow Road Dental Practice | Coventry | A rating |
| Longfield Medical Centre | Maldon | A rating |
| Longford Chemist Ltd | Coventry | A rating |
| Longford Convenience Ltd | Coventry | A rating |
| LONGFORTE TRADING LIMITED | WATFORD | A rating |
| Longlane Design Limited | London | A rating |
| Longlea Limited | Maidenhead | A rating |
| Longleat Enterprises Ltd | Warminster | A rating |
| LONGLEAT LIMITED | Bristol | A rating |
| Longmoor Care Limited | Birmingham | A rating |
| Longrad Ltd | London | A rating |
| LongReach Capital Ltd | London | A rating |
| Longridge Cricket Club | Longridge | A rating |
| Longridge Pound Plus Ltd T/A Pound Plus Mobile and Vape | Preston | A rating |
| Longridge Towers School | Berwick-upon-Tweed | A rating |
| Longroyde Primary School | BRIGHOUSE | A rating |
| LONGSHOT LIMITED | London | A rating |
| Longshot Systems Limited | London | A rating |
| Longsight Business Park | Manchester | A rating |
| LONGSIGHT COMMUNITY ART SPACE CIC | Manchester | A rating |
| LONGSIGHT TIMBER LTD | Manchester | A rating |
| Longspur Capital Limited | LONDON | A rating |
| Longstone Partners LLP | London | A rating |
| LONGSWORD BUILDING & MAINTENANCE SERVICES LTD | London | A rating |
| LONGTEK ELECTRONICS EUROPE LTD | Enfield | A rating |
| Longthornes Pharmacies limited | West cliff on sea | A rating |
| Longton Booze & News | Merseyside | A rating |
| Longton Cricket Club | Stoke on Trent | A rating |
| Longton Medical Centre | Rainhill | A rating |
| Longtown Medical Practice | Carlisle | A rating |
| LONGULF TRADING (UK) LIMITED | LONDON | A rating |
| LONGVALLEY PACKAGING LIMITED | Barking | A rating |
| Longview Care Home Cornwall Ltd | TRURO | A rating |
| Longview Inc Ltd | London | A rating |
| Longview Productions Ltd | London | A rating |
| Longwave Digital Ltd | Leeds | A rating |
| Longway Avenues (LA) Care Ltd | Greater Manchester | A rating |
| LONMILE PARTNERS LIMITED | London | A rating |
| Lonsdale Road post office and convenience store | Southend-On-Sea | A rating |
| Lontech Facilities Ltd. | Romford | A rating |
| LONVISE LIMITED | London | A rating |
| Lonza Biologics Plc | Slough | A rating |
| LOOE INDIAN CUISINE LTD | Cornwall | A rating |
| Look Ahead Care and Support Ltd | London | A rating |
| LOOKADTHAT LTD | London | A rating |
| Looking Good Ltd | Hull | A rating |
| Lookout Family Salon | Leicester | A rating |
| Lookout Limited | Sunningdale | A rating |
| Loom Club Islington Limited | London | A rating |
| Loomer Medical Partnership | Newcastle-under-Lyme | A rating |
| Loomery Limited | London | A rating |
| Loomis Sayles Investments Limited | London | A rating |
| LOON FUNG (LONDON) LTD. | LONDON | A rating |
| Loon Investments | Ongar | A rating |
| LOONG CHEONG FOOD UK LTD | London | A rating |
| LOONG EXPRESS LIMITED | London | A rating |
| Loop Engineering Ltd | London | A rating |
| Loop Horizon Limited | Richmond | A rating |
| Loop Interiors International Limited | London | A rating |
| LOOP MOBILE LIMITED | London | A rating |
| Loop Returns UK, Ltd | London | A rating |
| Loop Software Ltd | Moreton-in-Marsh | A rating |