| Mako Logistics UK Limited | Feltham | A rating |
| Mako Offshore Ltd | Aberdeen | A rating |
| Makoil Group Limited | London | A rating |
| Makor Securities London Ltd | London | A rating |
| Makosi UK Ltd | London | A rating |
| MAKOWER ARCHITECTS LIMITED | LONDON | A rating |
| MAKS BUILDERS LTD | Birmingham | A rating |
| MAKS PHARMACY LTD | GILLINGHAM | A rating |
| MAKS RETAILING LTD | Manchester | A rating |
| Maks Services (UK) Limited | Bilston | A rating |
| Maksanus Care Services Ltd | London | A rating |
| Maksi Limited | London | A rating |
| MAKSONS CONVENIENCE RETAIL LTD | Aylesbury | A rating |
| MAKSONS FUELS RETAIL LTD | TRING | A rating |
| MAKSTAR LTD | Barking | A rating |
| Maksure Risk Solutions Ltd | London | A rating |
| MAKTAB TARIGHAT OVEYSSI SHAHMAGHSOUDI (SCHOOL OF ISLAMIC SUFISM) | London | A rating |
| Makutu dot IO Limited | Derby | A rating |
| MAL CONTRACTORS (CIVIL ENGINEERING) LTD | London | A rating |
| MALA CATERING LTD T/A DHABA | London | A rating |
| MALA SALCOMBE LTD | Kingsbridge | A rating |
| Mala Thai Massage Ltd | Leeds | A rating |
| Malabaarii LTD | London | A rating |
| Malabar Cardiff Limited T/a Salkaara | Cardiff | A rating |
| Malabar Foods Ltd | Slough | A rating |
| Malabar Gold & Diamonds Limited | London | A rating |
| MALABAR MAJLIS | STOKE-ON-TRENT | A rating |
| Malabar Stores Limited | Cornwall | A rating |
| Malaberg Ltd | Sheffield | A rating |
| Malaberg Ltd | London | A rating |
| MALABIS SERVICE'S LTD | London | A rating |
| Malabu BKS Limited TA Malibu Darbar | Edgware | A rating |
| Malachi Care Services Ltd | PONTEFRACT | A rating |
| Malachi Contractors Ltd | London | A rating |
| Malachy Walsh & Co (UK) Ltd | London | A rating |
| Malakoff Limited | Lerwick | A rating |
| Malander UK Limited | London | A rating |
| Malani Leisure Limited | Leicester | A rating |
| Malankara Mar Thoma Syrian Church Diocese of UK, Europe and Africa | Ashford | A rating |
| MALAR RETAILS LTD T/A POPPLETON VILLAGE STORE & POST OFFICE | YORK | A rating |
| Malar Super Market UK Ltd | Wembley | A rating |
| Malaria Consortium | London | A rating |
| Malarville and Co Ltd | South Glamorgan | A rating |
| MALATANG OXFORD LTD | Oxford | A rating |
| Malathy Group Limited | Hertfordshire | A rating |
| MALATHY UK LTD | LUTON | A rating |
| Malawi High Commission | London | A rating |
| Malay Home Limited t/a Malay Malay Home | Salford | A rating |
| Malayalee Association of the UK | London | A rating |
| Malayan Banking Berhad | London | A rating |
| MALAYSIA AIRLINES BERHAD | LONDON | A rating |
| Malaysia Tourism Promotion Board | London | A rating |
| MALAYSIAN DELIGHT (WARWICKSHIRE) LIMITED | Harborne | A rating |
| Malaysian Kitchen UK | Bristol | A rating |
| Malca-Amit UK Limited | London | A rating |
| Malco Services Limited | Cambridge | A rating |
| MALCO SERVICES(UK) LTD T/A Texaco | Feltham | A rating |
| Malcolm Bastard Bloodstock LTD | Aldbourne | A rating |
| Malcolm Building Services Limited | Orpington | A rating |
| Malde & Co | Harrow | A rating |
| Malden Golf Club Members Ltd | NEW MALDEN | A rating |
| Malden Oaks School and Tuition Service | Kingston upon Thames | A rating |
| Malden Wanderers Cricket & Lawn Tennis Club | New Malden | A rating |
| Maldon Specsavers Limited | Maldon | A rating |
| MALEBON AYLESBURY LTD | Oxford | A rating |
| MALFATTI CITY LIMITED | London | A rating |
| MALFAUR LONDON CONSULTING LIMITED | Leicester | A rating |
| Malhi Haulage Limited | Belvedere | A rating |
| Malhi meat Center Ltd | Birmingham | A rating |
| MALHOTRA CARE HOMES LIMITED | NEWCASTLE | A rating |
| Malhotra Fin (UK) Limited | Newcastle Upon Tyne | A rating |
| Malhotra Group PLC | Newcastle upon Tyne | A rating |
| MALHOTRA NEWS AGENT LTD | LONDON | A rating |
| MALI SOLUTION LIMITED | Bolton | A rating |
| Mali Therapeutic Massage Ltd | Dundee | A rating |
| Malibu Bathrooms & Kitchens Limited | Wembley | A rating |
| Malibu Manufacturing Ltd | St Albans | A rating |
| Maliha Advisory & Consultancy Ltd T/A MKK Solicitors | Hounslow | A rating |
| Malik & Co Accountants Ltd | Leicester | A rating |
| Malik and Malik Ltd (trading as Malik and Malik Solicitors) | Willesden | A rating |
| MALIK BUTCHERS LTD | WOLVERHAMPTON | A rating |
| Malik Foodstore | Bristol | A rating |
| MALIK GROUP OF BUSINESS LTD | London | A rating |
| Malik Halls 2 Ltd | Bradford | A rating |
| MALIK RIAZ AND SONS LTD | Surrey | A rating |
| Malik's Kitchen Limited | Bradford | A rating |
| Malik's Properties Limited | Liverpool | A rating |
| MALIKFADEZ UK LTD | Chatham | A rating |
| MALIKS EXPRESS COOKHAM LTD | Cookham | A rating |
| Malin Abram | Glasgow | A rating |
| Malin Group Ltd | Glasgow | A rating |
| Malindi Care Services Limited | Barking | A rating |
| Malinggo Restaurant | Aldershot | A rating |
| MALINGO ALDERSHOT LTD T/A KOSU MOSU - SUSHI & BAR | Fleet | A rating |
| MALINI LTD | LONDON | A rating |
| MALINI12 LTD T/A Max convenience store | Aberdeen | A rating |
| MALIPAC LTD | Leicester | A rating |
| MALISHEV ENGINEERS LTD | Bath | A rating |
| Maljee Establishment Limited T/A Vision Academy | London | A rating |
| Malkuwth Home Care Ltd | High Wycombe | A rating |
| Mallaghan Engineering Ltd | Dungannon | A rating |
| Mallard Dental Practice | Henfield | A rating |
| Mallard Point Ltd | Stamford | A rating |
| Mallikanthan Suthakar | Hampshire | A rating |
| Malling Health UK Limited | Fareham | A rating |
| Malling Repair Services Limited | Kent | A rating |
| Mallinson Architects and Engineers Ltd. | London | A rating |
| Mallon Limited | London | A rating |
| Mallow Tree Limited T/A Rita Farhi and Mallow Tree | London | A rating |
| Mallowstreet Limited | LONDON | A rating |
| Malloy Aeronautics Limited | Maidenhead | A rating |
| Malloy Aeronautics Ltd. | Beaconsfield | A rating |
| MALLUCCI LONDON LIMITED | London | A rating |
| Malmesbury Medical Partnership | Malmesbury | A rating |
| Malmin Healthcare Ltd | Hartlepool | A rating |
| malmin orthodontic group limited | london | A rating |
| MALMO Healthcare Specialists Limited | Lee-On-The-Solent | A rating |
| Malone Kindergarten Ltd. | Belfast | A rating |
| Malone Lodge Hotel Ltd | Belfast | A rating |
| MALPAS DENTAL SURGERY | MALPAS | A rating |
| Malsis Hall Limited | Keighley | A rating |
| MALSSAN ENTERPRISES LTD | Walsall | A rating |
| Malt Community Ltd | London | A rating |
| Malt House Farm | Stone Kidderminister | A rating |
| Malt Shovel (Wolverhampton) Limited | West Bromwich | A rating |
| Malta High Commission London | London | A rating |
| Malthouse Surgery | Abingdon | A rating |
| Malthurst Management Limited | London | A rating |
| Maltin PR Ltd | London | A rating |
| Maltings Communications Limited | St. Albans | A rating |
| Malton Hill Limited T/A Essex Pizza Hasty Tasty | Harlow | A rating |
| Maltron International Ltd | Rayleigh | A rating |
| MALVERN BEDS LTD | BIRMINGHAM | A rating |
| Malvern Capital Resources Ltd | Sudbury | A rating |
| MALVERN COLLEGE | MALVERN | A rating |
| Malvern Hill Express Ltd | Malvern | A rating |
| Malvern House International Limited | London | A rating |
| Malvern Inns Three Ltd | Harrogate | A rating |
| Malvern Inns Two Ltd t/a The Square and Compass | Harrogate | A rating |
| Malvern Panalytical Limited | Malvern | A rating |
| Malvern Services Ltd | Hartlepool | A rating |
| Malvern Theatres Trust Ltd | Malvern | A rating |
| Malvirt Limited T/A Birchwood Care Services | London | A rating |
| Malwa Express Transport liMITED | STAINES | A rating |
| Malwa Plant Training Ltd | Ruislip | A rating |
| Malwa Transport Ltd | Dunstable | A rating |
| MALWAI TRANSPORT LTD | Oldbury | A rating |
| MAM RETAILERS LIMITED | WHITBURN | A rating |
| Mama Bear Childcare Ltd | London | A rating |
| Mama Calabar | London | A rating |
| Mama Cook Restaurant & Bar | Feltham | A rating |
| MAMA NIMI LTD | Belfast | A rating |
| MAMA S FAST FOOD LIMITED | BLACKBURN | A rating |
| MAMA Youth Project | London | A rating |
| MAMACITA FOUNDATION | ABERDEEN | A rating |
| Mamado International Limited | London | A rating |
| MAMAMIA FOOD | Leicester | A rating |
| Mamars Limited | London | A rating |
| MAMAS PIZZA OLDHAM LTD | Oldham | A rating |
| Mamasi Ltd | Essex | A rating |
| Mamaya Limited | London | A rating |
| Mamba 2.0 Limited T/A The Giddy Goose | Dundee | A rating |
| MAMBAGATE LIMITED | Buckinghamshire | A rating |
| MamboCity | WEMBLEY | A rating |
| Mambu Tech Limited | London | A rating |
| Mame Ltd | Chiswick | A rating |
| MAMHEAD MANAGEMENT LTD | Devon | A rating |
| Mamma's Kitchen Ltd | London | A rating |
| MAMMA'S LTD T/A MAMMA'S | Herne bay | A rating |
| Mammal Design | London | A rating |
| Mammaz foods ltd T\A roosters piri piri | Essex | A rating |
| Mammbo Group Limited | Hayes | A rating |
| Mammoet (UK) Ltd | Wallsend | A rating |
| Mammoth Construction Ltd | London | A rating |
| Mammoth Screen Limited | London | A rating |
| Mamo UK Trading Limited t/a Lahore Halal Meat | Manchester | A rating |
| Mamou-Mani Architects | London | A rating |
| Mams Shop LTD | Todmodern | A rating |
| Mamta786 Ltd t/a Mamta | Hartlepool | A rating |
| MAMU BAGNA HF LTD | Hatfield | A rating |
| Mamu Enterprises Ltd T/A Eastern Balti Restaurant | Kendal | A rating |
| Man & Co | Westcliff On Sea | A rating |
| Man and Machine Ltd | Thame | A rating |
| Man Bites Dog Limited | Brighton | A rating |
| Man Capital LLP | London | A rating |
| MAN CORPORATION LIMITED | LONDON | A rating |
| Man Group Services Limited | London | A rating |
| Man Power Connections Ltd | Walsall | A rating |
| Man Truck & Bus UK Ltd. | Swindon | A rating |
| Man vs Machine Limited | London | A rating |
| Man4security Limited | Morden | A rating |
| Mana Kau Farming Ltd | Newcastle | A rating |
| Mana Opco Ltd | London | A rating |
| Mana Restaurant Group Limited | Manchester | A rating |
| MANAAKI HEALTHCARE LIMITED | Hertfordshire, England | A rating |
| Manadip Ltd T/A New Anand Restaurant | Glasgow | A rating |
| Manage Care Homes Limited | Baldock | B rating |
| MANAGED HEALTHCARE SERVICES LIMITED | Sheffield | A rating |
| Managed IT Services Ltd. | Carshalton | A rating |
| MANAGED IT SOLUTIONS & SUPPORT LIMITED | Oldham | A rating |