| Magdalen Court School | Exeter | A rating |
| Magdalen House Limited | Hadleigh | A rating |
| Magdalen Nursery & Daycare Limited | London | A rating |
| Magdalene College in the University of Cambridge | Cambridge | A rating |
| MAGDALENE GROCER LIMITED | EDINBURGH | A rating |
| MAGDALENEHOUSE | BLACKBURN | A rating |
| Magdrive Ltd | Didcot | A rating |
| Mage Control Systems Ltd | East Kilbride | A rating |
| MAGE GROUP LIMITED | London | A rating |
| Magee Equine Ltd | Wiltshire | A rating |
| Magellan Aerospace (UK) Ltd | Wrexham | A rating |
| Magen Financial LLP | London | A rating |
| Magentic Labs Limited | London | A rating |
| Magentus Software Limited | Mansfield | A rating |
| MAGGI FOODS LTD | Northolt | A rating |
| MAGGIORE RESTAURANTS LIMITED | LONDON | A rating |
| Maggs Day Centre | Worcester | A rating |
| Maghera Dental Ltd | Maghera | A rating |
| Maghull Cricket Club | Maghull | A rating |
| Maghull Specsavers Limited | Maghull | A rating |
| Magia CX UK LTD | London | A rating |
| Magic Box Toys UK, LTD | Horley | A rating |
| Magic Breakfast | London | A rating |
| Magic Bus UK | Chichester | A rating |
| MAGIC CARE MOMENTS LTD | LONDON | A rating |
| Magic for Engineering Works Ltd | Croydon | A rating |
| MAGIC GRAPHIC DESIGN LIMITED | Hayes | A rating |
| MAGIC LABS IT LTD | Coventry | A rating |
| Magic Life Limited | London | A rating |
| MAGIC OF CURRYS LTD | Barnsley | A rating |
| Magic Online Solutions Ltd t/a OneAgency | Norwich | A rating |
| Magic Party Tent Hire Limited | Smethwick | A rating |
| Magic Roundabout Nurseries Ltd | London | A rating |
| MAGIC SMILE (TURKEY) LTD | LONDON | A rating |
| MAGIC SOFTWARE SERVICES LTD | LONDON | A rating |
| Magic Sound Ltd | London | A rating |
| Magic Sparks Nursery | Luton | A rating |
| MAGIC TECH LTD | London | A rating |
| Magic Textiles Limited | Leek | A rating |
| Magic Touch Cleaning Ltd | London | A rating |
| Magic Valeting Centre (City MK) Limited | Milton Keynes | A rating |
| MAGIC WOK HITCHIN LTD | Hertfordshire | A rating |
| Magic Words Therapy Ltd. | Newport Pagnell | A rating |
| Magic Work Brighton Limited T/A Magic Wok | Brighton | A rating |
| Magicad Group Limited | Manchester | A rating |
| Magical Napkins Ltd T/A Yatri | London | A rating |
| MAGICAL NAPKINS WEST LTD T/A YATRI | London | A rating |
| Magical Productions Ltd | London | A rating |
| Magical Thinking Pictures Limited | London | A rating |
| Magicave Holdings Limited | Crowborough | A rating |
| Magicbrick Estate Agents Ltd T/A Magicbrick Estate Agents | Harrow | A rating |
| MagiClick UK Ltd | London | A rating |
| MAGICSPOON LTD | Watford | A rating |
| MAGMA DESIGN LTD | London | A rating |
| MAGMA PROJECTS & MANAGEMENT LTD | LONDON | A rating |
| Magmatic Games Ltd | London | A rating |
| Magna Carta College | SLOUGH | A rating |
| Magna Carta Island International Club Limited | london | A rating |
| Magna Catering Limited | High Wycombe | A rating |
| Magna Collection Ltd | Farnham | A rating |
| MAGNA COMPONENTS LTD | DEWSBURY | A rating |
| Magna Exteriors (Banbury) Limited | Banbury | A rating |
| Magna Exteriors (Liverpool) Limited | Liverpool | A rating |
| Magna Foodservice Ltd | Heston | A rating |
| magna group practice | Rotherham | A rating |
| Magna Healthcare Limited | Chew Magna | A rating |
| Magna Learning Partnership | Salisbury | A rating |
| Magna Software Ltd | Banbridge | A rating |
| MAGNA TANDOORI LTD | Berwick-Upon-Tweed | A rating |
| Magna World Ltd | Tillicoultry | A rating |
| Magnasoft Europe Ltd | London | A rating |
| Magnate Limited | London | A rating |
| Magnavision ltd | Swanley | A rating |
| MAGNESIUM ELEKTRON LIMITED | Swinton | A rating |
| Magnet Agency London Limited | London | A rating |
| Magnet Limited | Darlington, | A rating |
| MAGNET TRADING LTD | Dartford | A rating |
| Magnetar Financial (UK) LLP | London | A rating |
| Magnetic London Creative Services Ltd | London | A rating |
| Magnetic Shields Limited | Tonbridge | A rating |
| Magnetic Systems Technology Limited | Rotherham | A rating |
| MAGNIFIC IT LTD | Darlington | A rating |
| MAGNIFICENT CARE SERVICES LIMITED | Clapham | A rating |
| MAGNISOL LIMITED | Richmond | A rating |
| Magnit Global UK Limited | Chesire | A rating |
| Magnite Limited | London | A rating |
| Magnitude Biosciences Limited | Sedgefield | A rating |
| Magnitude Surveys Ltd | Bradford | A rating |
| Magnolia Building Services Limited | Essex | A rating |
| Magnolia House Care Home | Axminster | A rating |
| MAGNOLIA HOUSE DENTAL PRACTICE | HAVANT | A rating |
| Magnum Cars & Carriages Ltd | Leatherhead | A rating |
| Magnum ICC UK Limited | Kingston Upon Thames | A rating |
| MAGNUM NETWORKS LIMITED | Sutton | A rating |
| MAGNUM PHOTOS LIMITED | LONDON | A rating |
| MAGNUM PRIVATE HIRE LTD | Stoke on Trent | A rating |
| magnum trading wf ltd | Pontefract | A rating |
| Magnus Care Ltd | Wallsend | A rating |
| MAGNUS CARE LTD | Tyne and Wear | A rating |
| MAGNUS INFOTECH LIMITED | Romford | A rating |
| Magnus Media Ltd | Southall | A rating |
| MAGNUS NORQUAY SHELLFISH LIMITED | KIRKWALL | A rating |
| MAGOR SERVICES LIMITED | Cardiff | A rating |
| MAGPIE CREATIVE COMMUNICATIONS LTD | Leeds | A rating |
| Magpie Totem Limited | Manchester | A rating |
| Magrath Sheldrick LLP | London | A rating |
| Magrun Ltd | Enfield | A rating |
| Maguire Care Limited T/A Walfinch Reigate & Horsham | Reigate | A rating |
| Maguire Hotels Limited t/a Millbrook Lodge Hotel | BALLYNAHINCH | A rating |
| Maguires Foods Ltd t/a Maguires Fish & Chips | Newcastle Upon Tyne | A rating |
| Maguro Limited | London | A rating |
| Magus GI Limited t/as Coversure Insurance Services (Westminster) | London | A rating |
| Magus Research Limited T/A Crownpeak | London | A rating |
| MAH Accountants LTD | Slough | A rating |
| MAH CONSTRUCTION GROUP LIMITED | London | A rating |
| MAH DIAMONDS JEWELLERY WORKSHOP LTD | London | A rating |
| MAH HOLDING GROUP LTD | LONDON | A rating |
| MAH NE LTD | Hebburn | A rating |
| Mah Operation Ltd T/A Hala Lebanese | Reading | A rating |
| MAH PHARMA LIMITED | London | A rating |
| MAH Professional Services Ltd | London | A rating |
| Maha (Ponty) Ltd | Pontypool | A rating |
| MAHA & BHARAT LTD | Wigan | A rating |
| MAHA BENFLEET LTD T/A PINK CHILLIZ | Benfleet | A rating |
| MAHA CONSTRUCTION LTD | Manchester | A rating |
| Maha Logistics Limited | Birmingham | A rating |
| MAHA MK LTD t/a MAHABHARAT | Buckingham | A rating |
| MAHA POST LIMITED | Hull | A rating |
| MAHA RETAIL LIMITED T/A MFG BP | Latchingdon | A rating |
| MAHA RL LIMITED T/a Maha | BIRMINGHAM | A rating |
| Maha Shiv Shakti Mandir | WALSALL | A rating |
| MAHA SUPERSTORE LTD | WIRRAL | A rating |
| Maha Traders Limited | Blackpool | A rating |
| Mahad Trading Limited | Birmingham | A rating |
| MAHADEV STORES LIMITED (Pensford Post Office) | Pensford | A rating |
| Mahadevan Vikneswaran T/A Easebourne Village Store | Midhurst | A rating |
| MAHAL AMBLE LTD | morpeth | A rating |
| MAHAL PROPERTY LTD | DAGENHAM | A rating |
| Mahal Roofing & Construction Ltd | Hounslow | A rating |
| Mahal Tavern Ltd | Peterborough | A rating |
| MAHALAXMI TRADING LIMITED T/A THE GURKHA PALACE | OXFORD | A rating |
| Mahalingam Kuhendran T/A A&M Newsagents and Stuart Wines | Waterloo | A rating |
| Mahalingham Koneswaran T/A MNS Late Shop 7 | Widnes | A rating |
| MAHAM PROPERTIES LIMITED | Coventry | A rating |
| Maham's Cafe Ltd | Falkirk | A rating |
| Mahamaya Foods Ltd | Hayes | A rating |
| Mahamevnawa International Meditation Centre | Basildon | A rating |
| MAHAMEVNAWA MEDITATION CENTER UK | WIDNES | A rating |
| MAHAPOOJA LTD | Greater Manchester | A rating |
| MAHAQ FOODS LIMITED | Batley | A rating |
| Mahar Coffee Ltd | Norwich | A rating |
| MAHAR FOODS LIMITED | LONDON | A rating |
| Mahar Traders LTD | London | A rating |
| MAHARAAJ RESTAURANT LTD | Lincoln | A rating |
| Maharaj Foods Limited | Bourne End | A rating |
| MAHARAJ SUPERSTORE LIMITED | Walmer | A rating |
| Maharaja Drinks Emporium Limited | Oxford | A rating |
| MAHARAJA HOSPITALITY LIMITED | Hounslow | A rating |
| MAHARAJA LONDON LIMITED | UXBRIDGE | A rating |
| MAHARAJA SPICE LIMITED | LEICESTER | A rating |
| MAHARAJAH NEWQUAY LTD | NEWQUAY | A rating |
| Maharan Ltd | London | A rating |
| MAHARANI INDIAN RESTAURANT COL LTD | Colchester | A rating |
| Maharani South Indian Restaurant Ltd | Preston | A rating |
| MAHARANIS OF DEEPING LTD TA MAHARANIS | Peterborough | A rating |
| MAHARJAN FOODS LIMITED | Belfast | A rating |
| MAHASANA LTD | Eastleigh | A rating |
| Mahasi Dhamma Fellowship | Salford | A rating |
| Mahason Limited | Harrow | A rating |
| Mahastore Ltd. | London | A rating |
| Mahathi Limited | Mildenhall | A rating |
| Mahathmaseelann Puthuvlakan | Sunderland | A rating |
| Mahavir Foundation | Harrow | A rating |
| MAHAVIR GROUP LTD | DURHAM | A rating |
| MAHAVIR SWEET MART | London | A rating |
| MAHBOOB & SONS LTD | Manchester | A rating |
| Mahboob Muhammad Ayub T/A Imaan Halal Meat | Huddersfield | A rating |
| MAHBUB & CO ACCOUNTANTS LIMITED | London | A rating |
| MAHBUB BUILDERS LTD | MANCHESTER | A rating |
| Mahdi Travel & Tours LTD | Birmingham | A rating |
| MAHDI'S PLANTS LTD | London | A rating |
| Mahdia Ltd | London | A rating |
| Mahee Tandoori Ltd trading as Mahee Tandoori | Abingdon | A rating |
| MAHENDIRA SERVICES | KINGS LANGLEY | A rating |
| Mahendra Khimji Raja | Bolton | A rating |
| Mahendrarasan Rasalingam & Malarvathanee Rajamanikkam T/As My village Stores | Rolvenden | A rating |
| Maher & Co Solicitors Limited | Maidenhead | A rating |
| MAHER COMMUNITY ASSOCIATION (LEICESTER) UK | LEICESTER | A rating |
| Maher's Tawa, Grill and Karahi t/a Mahers Curry Limited | Derby | A rating |
| MAHERS DRINKS LTD | Birmingham | A rating |
| Mahes Trading Ltd | Winscombe | A rating |
| MAHESH BHATT LIMITED T/A Broadway Pharmacy | Bedford | A rating |
| Mahesh Pharmaceutical Ltd TAs Elstree Pharmacy | Elstree | A rating |
| MAHG CHILDREN'S SERVICES LTD | Long Eaten, | A rating |
| MAHHAD HALAL MEAT LTD | Slough | A rating |
| Mahham Collection Ltd | Birmingham | A rating |
| Mahi Consultants Limited | Isleworth | A rating |
| Mahi Restaurant Limited | Northwood | A rating |
| MAHI SWEETS AND BAKERS LTD | Walsall | A rating |
| MAHIM INDIAN TAKEAWAY LIMITED | Shrewsbury | A rating |