| MNFST Studio Ltd | London | A rating |
| MNFST UK Limited | London | A rating |
| MNGR.CLUB LTD | London | A rating |
| MNI Care Ltd | Carlisle | A rating |
| MNI RESTAURANTS LTD | Liverpool | A rating |
| MNK Estates (UK) Limited | Langley | A rating |
| MNK Professional Services Ltd | Reading | A rating |
| MNK RE Limited | London | A rating |
| MNK Retail Ltd | Northampton | A rating |
| MNM IT Services Limited | Blackburn | A rating |
| MNM&CO LTD | BIRMINGHAM | A rating |
| MNO Fitness Ltd | London | A rating |
| MNP FOODS LTD | LONDON | A rating |
| MNR DISTRIBUTION LTD | Southall | A rating |
| MNS 7 LIMITED t/a U Save Convenience Store | Glasgow | A rating |
| MNS Cherry Tree Ltd T/A The Cherry Tree | Chinnor | A rating |
| MNS Consul Home Care Ltd | Chelmsford, Essex | A rating |
| MNS Knitwear GB Ltd | Leicester | A rating |
| MNS LEEDS LIMITED T/A BUKHARA RESTAURANT | LEEDS | A rating |
| MNS Pharmaceuticals | London | A rating |
| MNS SAHARAN LTD | Newport Pagnell | A rating |
| MO & SI Limited | London | A rating |
| MO Connections LTD | Burnley | A rating |
| Mo Quality Cars Ltd T/A Mo Car Sales | Blaydon-on-Tyne | A rating |
| MO-SYS ENGINEERING LIMITED | London | A rating |
| Mo-Sys Solutions Ltd | London | A rating |
| MO'S BARBER (DERBY) LIMITED | Derby | A rating |
| MO'S DESIGNS LTD | Watford | A rating |
| MO'S PERI PERI AND PIZZA LIMITED | Dunstable, Luton | A rating |
| Mo's Restaurant NQY Limited | Newquay | A rating |
| Mo's Supermarket Ltd | Stockport | A rating |
| MOA Benchmarking Limited | Slinfold | A rating |
| MOA FOODS LIMITED | GREAT YARMOUTH | A rating |
| MoA Technology Ltd | Oxford | A rating |
| Moaden Accounting Ltd | LONDON | A rating |
| Moashfoods Limited T/A Subway | Hitchin | A rating |
| Moazzam Ali Films Ltd | Rochdale | A rating |
| MOB (LONDON) LTD | NORTHAMPTON | A rating |
| Mob Zone Limited | Eastleigh | A rating |
| MOBASHAR FIRMA LTD | Edinburgh | A rating |
| Mobfix Limited | Lincoln | A rating |
| MOBHUT LTD | Kidderminster | A rating |
| MOBHUTSTOURBRIDGE LTD | Stourbridge | A rating |
| Mobi Garden London Ltd | London | UK Expansion Worker: Provisional |
| Mobi Hub International Limited | Middlesex | A rating |
| MOBI TEC (MK) LTD | BOLTON | A rating |
| MobiBiz Ltd | London | A rating |
| Mobica Limited | Wilmslow | A rating |
| Mobico Group PLC | Birmingham | A rating |
| Mobicoms Electronics Limited | Luton | A rating |
| Mobideals Limited | Oldham | A rating |
| MOBIFIXER LIMITED | Bexleyheath | A rating |
| Mobifixonline.com Limited | London | A rating |
| MOBIHIVE LABS LTD | Ilford | A rating |
| MOBILE & COMPUTER SHOP LIMITED | Edmonton Green | A rating |
| Mobile And Vape Hub Ltd | London | A rating |
| MOBILE ARENA BRISTOL LIMITED | NEWTON ABBOT | A rating |
| Mobile Broadband Network Limited | Reading | A rating |
| Mobile Buddy Ltd | Port Talbot | A rating |
| Mobile Car Services (London) LTD | Edgware | A rating |
| MOBILE CARE ACCESORIES LIMITED | Telford | A rating |
| Mobile Care Services Ltd | Atherstone | A rating |
| Mobile Care South East Limited | London | A rating |
| MOBILE CITI LTD | Liverpool | A rating |
| Mobile City | Leeds | A rating |
| Mobile Connect London Limited | Harrow | A rating |
| Mobile Content Management Solutions Limited (MCMS) | Horsham | A rating |
| Mobile Cottage Ltd T/A iRepair | York | A rating |
| MOBILE CRAZY LTD | MANCHESTER | A rating |
| Mobile Doctors Collective Ltd t/a Effect Doctors | London | A rating |
| Mobile Emporium Ltd | BIRMINGHAM | A rating |
| Mobile Factory Ltd T/A Mobile Factory | Coventry | A rating |
| Mobile Fashion Ltd | Alfreton | A rating |
| Mobile Fone Experts | Ipswich | A rating |
| MOBILE GIFT LIMITED | Southampton | A rating |
| MOBILE HUB DERBY LIMITED | Derby | A rating |
| MOBILE HUB LONDON LTD | Middlesex | A rating |
| Mobile Legends Ltd | London | A rating |
| Mobile Mark (Europe) Ltd | Hednesford | A rating |
| Mobile Market Limited | Middlesex | A rating |
| MOBILE MASTER 1 LIMITED | Spalding | A rating |
| MOBILE MASTER STAMFORD LIMITED | Stamford | A rating |
| Mobile Partnership Ltd | LUTON | A rating |
| MOBILE PHONE EXTRA LTD | Smethwick | A rating |
| Mobile Phone Repair Doctor | London | A rating |
| Mobile Pie Ltd | Bristol | A rating |
| MOBILE PLUS OUTLET LIMITED | Edinburgh | A rating |
| Mobile Porsche Specialist Ltd | Cookham | A rating |
| Mobile Power LTD | Sheffield | A rating |
| Mobile Rehab Ltd | Ascot | A rating |
| Mobile Repair Scot Limited | Glasgow | A rating |
| Mobile Sales Ltd | Bingley | A rating |
| MOBILE SERVICES LTD | Lanarkshire | A rating |
| Mobile Shop Leeds Ltd | Leeds | A rating |
| MOBILE SOLUTIONS SCOTLAND LTD | Glasgow | A rating |
| MOBILE STUFF LIMITED | SMETHWICK | A rating |
| Mobile Systems International Consultancy Ltd | London | A rating |
| MOBILE TECH & VAPE LTD | Bo'Ness | A rating |
| Mobile Tech Centre Limited | Swindon | A rating |
| MOBILE TECH INTL LIMITED | Derby | A rating |
| MOBILE TECHNOLOGIES LTD | London | A rating |
| Mobile Up Ltd | Oswestry | A rating |
| Mobile Ware Ltd | Manchester | A rating |
| Mobile Warehouse.co.uk Limited | Birmingham | A rating |
| Mobile Xone (UK) Ltd | Worcester, | A rating |
| Mobile Xperts Ayr Limited | Ayr | A rating |
| Mobile Zone Bradford Ltd | Bradford | A rating |
| MOBILEDOC GADGETS REPAIR CENTRE LTD | Rushden | A rating |
| MOBILEHUBNOTTINGHAM LIMITED | Stapleford, Nottingham | A rating |
| Mobilenest Limited | London | A rating |
| Mobiles 4 U | Manchester | A rating |
| Mobiles Computers Gadgets Ltd | Cheshire | A rating |
| MOBILES FIX LTD | Warrington | A rating |
| Mobiles Master UK Ltd | Bridge Road | A rating |
| MOBILES PLUS REPAIRS LTD | Nottingham | A rating |
| Mobiles Zone Limited | BELFAST | A rating |
| MOBILESENTRIX LTD | Coventry | A rating |
| Mobiletron UK Limited | Preston | A rating |
| Mobileum UK Limited | Bristol | A rating |
| MOBILEVALLEY LTD | Corby | A rating |
| Mobilink Trading Ltd | Windsor | A rating |
| Mobilise Consulting Limited | London | A rating |
| Mobilise Group Limited | Hayes, | A rating |
| Mobility Cyber Labs Ltd | Milton Keynes | A rating |
| Mobility Mojo (UK) Limited | Belfast | A rating |
| MOBILYNK LIMITED | Colchester | A rating |
| Mobilynx Foods Limited | Gravesend | A rating |
| Mobin (2011) UK Ltd | Maidstone | A rating |
| Mobinic Limited | Keighley | A rating |
| Mobis Parts Europe (UK) | Dordon | A rating |
| Mobit Solutions Limited | Hayes | A rating |
| Mobitech Cirencester Ltd | Cirencester | A rating |
| MOBITECH MOBILES LTD | Barnstaple | A rating |
| Mobitek Limited | Manchester | A rating |
| MOBITOPSHOP LTD | County Down | A rating |
| Mobius Capital Partners | London | A rating |
| Mobius Professional Services Limited | Bath | A rating |
| MOBIVET ltd | Bridgend | A rating |
| Mobivision Ltd | Hereford | A rating |
| Mobix Ltd | Middlesbrough | A rating |
| Mocean Energy Ltd | Edinburgh | A rating |
| Mochridhe (Edinburgh & Lothians) Limited | Glasgow | A rating |
| Mockingbird Raw Press Limited | London | A rating |
| MOCLOUK LIMITED | London | A rating |
| MoDa's Touch Limited | London | A rating |
| MODALINK LTD | London | A rating |
| Modality Group Limited | Barrow Upon Soar | A rating |
| Modality LLP | Birmingham | A rating |
| Modaxo Group UK Limited | Chippenham | A rating |
| Moddershall Cricket Club | Stone | A rating |
| MODE AGENCE LTD | London | A rating |
| MODE GLOBAL LIMITED | LONDON | A rating |
| mode transport limited | Birmingham | A rating |
| Modebest Builders Limited | Northolt | A rating |
| Modece Architects | Stowmarket | A rating |
| Model Media Ltd | OAKHAM | A rating |
| ModelML Limited | London | A rating |
| MODELS FO (UK) LTD | Manchester | A rating |
| Models One Limited | London | A rating |
| MODEM INTELLIGENCE LTD | LONDON | A rating |
| MODERATE ACADEMY AND TRAINING CENTRE LTD | ROCHDALE | A rating |
| Moderately Nice Studio Ltd | London | A rating |
| Modern | Bristol | A rating |
| MODERN ART LTD | London | A rating |
| Modern By Products UK Ltd | Skipton | A rating |
| Modern Clothing Limited | Horsham | A rating |
| Modern Construction Contractors Limited | London | A rating |
| Modern Design Building Services Ltd | Wembley | A rating |
| Modern Films Entertainment Ltd | London | A rating |
| Modern Hall Events Ltd | London | A rating |
| Modern Hire UK Limited | London | A rating |
| Modern Indian Diner Ltd | London | A rating |
| Modern Indian Foods Limited t/a The Tiffin Truck | Cambridge | A rating |
| Modern Milkman Ltd | Manchester | A rating |
| Modern Packaging UK Ltd | Pershore | A rating |
| Modern Paper Limited | Erith | A rating |
| MODERN SUSHI LTD | Leeds | A rating |
| Modern Ventures Limited | Cardiff | A rating |
| Modern-Expo UK Limited | Kettering | A rating |
| Moderna Biotech UK Limited | London | A rating |
| Modernation Ltd | London | A rating |
| Moderncare | Neath | A rating |
| Moderncuts Barbers Ltd | Swindon | A rating |
| Modernity London Limited | London | A rating |
| Moderntronics Ltd | Harrow | A rating |
| Modest Management | London | A rating |
| Modetour Network UK Ltd | LONDON | A rating |
| Modex Exhibitions Ltd | Banbury | A rating |
| MODHUBON SWEETS LTD T/A MODHUBON SWEETS | London | A rating |
| Modi Global Ltd | London | A rating |
| Modina Enterprise | Burnley | A rating |
| Modini Limited | Pewsey | A rating |
| Modis International Limited | London | A rating |
| Modish Fashion Ltd | London | A rating |
| ModnyCo Limited | Birmingham | A rating |
| Modo Energy | London | A rating |
| Modo Systems Ltd | Glasgow | A rating |
| MODS Management Ltd | Aberdeen | A rating |
| Modular Ceilings Ltd | Colwyn Bay | A rating |
| Modular Interiors Limited | Stevenage | A rating |