| Monument Promotions Limited | Swindon | A rating |
| Monument Resources Limited, UK Branch | London | A rating |
| Monument Retail Co Ltd | Nottingham | A rating |
| Monument Technology Limited | London | A rating |
| Monumo Limited | Great Chesterford | A rating |
| Monx Team UK Ltd | London | A rating |
| MONY Group PLC | Flintshire | A rating |
| MONZA SPORTS TUNING LTD | PULBOROUGH | A rating |
| Monzo Bank Ltd | London | A rating |
| Moo Lab (Holdings) Ltd | Sheffield | A rating |
| MOO Print Limited | London | A rating |
| MOOBOO HASTINGS LIMITED | Hastings | A rating |
| Mooboo Stratford ltd | London | A rating |
| Mood bar and steakhouse bedlington | Bedlington | A rating |
| MOOD MEDIA UK HOLDINGS LIMITED | London | A rating |
| Moodiesburn Dental Care | Moodiesburn | A rating |
| Moody's Analytics UK Ltd | London | A rating |
| Moody's Investors Service Ltd | London | A rating |
| Moody's Shared Services UK Limited | London | A rating |
| Moof IT limited | London | A rating |
| Moog Controls Limited | Tewkesbury | A rating |
| Mookoboza Limited | London | A rating |
| MOOLAH MATTERS LTD | OLD STEVENAGE | A rating |
| Moomenn Ltd | Walton on thames | A rating |
| Moon and Back Media Limited | Surrey | A rating |
| moon and food limited | gloucester | A rating |
| Moon Chelsea Ltd t/a Ixchel London | London | A rating |
| Moon Collider Limited | Edinburgh | A rating |
| Moon Hall Schools Educational Trust | Reigate | A rating |
| MOON INC LONDON LTD | London | A rating |
| Moon Rise 24 Hr Recruitment Ltd | Stockton | A rating |
| Moon@co Ltd | Irvine | A rating |
| Moonag Limited | Chesham | A rating |
| Moonbility Ltd | London | A rating |
| MOONBOW CREATIVE LIMITED | London | A rating |
| Moonbug Entertainment Limited | London | A rating |
| MOONCARE LIMITED | London | A rating |
| Mooncolony Limited | Cambridge | A rating |
| Moonfare UK Limited | London | A rating |
| Moonfire Ventures LLP | London | A rating |
| Moonflight LTD t/a Burleigh Court Hotel | Stroud | A rating |
| MOONGY AGAP2 LIMITED | Bristol | A rating |
| MOONLIGHT (LIMAVADY) LIMITED | Limavady | A rating |
| Moonlight Academy Ltd | London | A rating |
| MOONLIGHT BEDDING LIMITED | Birmingham | A rating |
| Moonlight Childcare Limited T/A Moonlight Nursery & Preschool | London | A rating |
| MOONLIGHT DENTAL SURGERIES LIMITED | Poole | A rating |
| Moonlight Events & Lola's Frozen food ltd | Leyton | A rating |
| MOONLIGHT FOOD LTD | London | A rating |
| MOONLIGHT PVT LIMITED T/A GREAT HIMALAYAS NEPALESE RESTARUANT AND BAR | Southport | A rating |
| Moonlight Shopper Limited | Lincoln | A rating |
| MOONLIGHT TANDOORI RESTAURANT LOSTWITHIEL LIMITED | Cornwall | A rating |
| MOONLINE UNIFORMS LTD | Burnley | A rating |
| Moonlite Blinds Ltd | Stoke-On-Trent | A rating |
| MoonPay (UK) Limited | London | A rating |
| Moonpig.com Limited | London | A rating |
| Moonraker Group Limited | Woburn Sands | A rating |
| Moonraker VFX Ltd | Bristol | A rating |
| Moonreach Limited | Deal | A rating |
| MOONRISE FOOD LTD | LONDON | A rating |
| MOONS Industries (UK), Limited | University of Reading Campus | A rating |
| MOONSECURITY LTD | Bolton | A rating |
| MoonSha Japanese Bar & Restaurant | Derby | A rating |
| Moonshot CVE Ltd | London | A rating |
| Moonshot Holdings Limited | London | A rating |
| MOONSPICE LTD | LONDON | A rating |
| MOONSTAR LONDON LTD | Barking | A rating |
| Moonstar Ventures Ltd | London | A rating |
| MOONSTONE ACCOUNTANTS LTD | London | A rating |
| MOONSTONE BUSINESS SOLUTIONS LTD | London | A rating |
| Moonstone Sri Lankan Restaurant | Hove | A rating |
| Moontex Trading UK Ltd | Southall | A rating |
| Moonvalleyai Ltd | London | A rating |
| Moonz Orthodontics Ltd | London | A rating |
| Moor and Coast Ltd | Whitby | A rating |
| Moor Choice Ltd | Leeds | A rating |
| Moor Food Ltd T/A The Bank | Rickmansworth | A rating |
| Moor Hall Restaurant Limited | Ormskirk | A rating |
| Moor House Residential Care Home | Middlesex | A rating |
| Moor House School & College | Oxted | A rating |
| MOOR LANE MOTORS LIMITED | Leeds | A rating |
| Moor Park Capital Partners LLP | London | A rating |
| Moor Park Charitable Trust Ltd | Ludlow | A rating |
| MOOR PARK HOUSE LIMITED | Preston | A rating |
| Moorcare Devon Limited | Yelverton | A rating |
| Moorclose Pharmacy | Workington | A rating |
| Moorcroft (Leeds) Ltd | Pontefract | A rating |
| Moorcroft Residential Care Home Ltd | Llandudno | A rating |
| Moore Barlow LLP | Eastleigh | A rating |
| Moore Braniff Chartered Accountants | Belfast | A rating |
| Moore Care and Support | Southampton | A rating |
| MOORE CARE LIMITED | BUXTON | A rating |
| Moore Global Network Limited | London | A rating |
| Moore House School | Bathgate | A rating |
| Moore Kingston Smith LLP | London | A rating |
| Moore Pharma Ltd | Southampton | A rating |
| Moorefield Farm Limited | Alverchurch | A rating |
| Moores Refrigeration Controlled Transport Limited | EYE | A rating |
| Moorfields Advisory Limited | London | A rating |
| Moorfields Eye Hospital NHS foundation Trust | London | A rating |
| moorgate care home | plymouth | A rating |
| Moorgate Service Station | Retford | A rating |
| Moorhead Excavations Ltd | Leeds | A rating |
| Moorhouse Group Limited | Caerphilly | A rating |
| MOORIM UK LTD | NEW MALDEN | A rating |
| Moorland Garden Ltd | Sutton | A rating |
| MOORLAND GENERAL STORES LTD T/A Harrys Bellfeild Supermarket | Rochdale | A rating |
| MOORLAND LN LTD | LINCOLN | A rating |
| Moorlands College | Christchurch | A rating |
| Moorlands Cricket Club | Mirfield | A rating |
| Moorlands Learning Trust | Ilkley | A rating |
| MOORLANDS REST HOME | READING | A rating |
| Moorlands Surgery | Darlington | A rating |
| Moorleigh Residential Care Home Limited | Torquay | A rating |
| Moorni Limited | Bishopton | A rating |
| Moorside Cricket and Bowling Club | Oldham | A rating |
| Moorside Precision Ltd | Poole, Dorset | A rating |
| Moorthy Mani T/as Durga Price cutter Premier | Cambridgeshire | A rating |
| Moorview Care | York | A rating |
| Moorville Developments Limited | Sheffield | A rating |
| Moose Hall Wellness Chippenham Limited | Chippenham | A rating |
| Moose Toys Ltd | St Columb Major | A rating |
| Moot Design Ltd | London | A rating |
| Moot Trading Ltd | Stafford | A rating |
| Moov Limited | London | A rating |
| Moove Lubricants Limited | Gravesend | A rating |
| MOOVR UK LTD | London | A rating |
| MOP Healthcare Limited | Staffordshire | A rating |
| MOR Bakehouse Limited T/A MOR Bakehouse | Edinburgh | A rating |
| Mor Property Ltd | Derby | A rating |
| Mora Design Ltd | Chadlington | A rating |
| Morae Global UK Limited | London | A rating |
| Morah Services Limited t/a Clarity Homecare Essex | Chigwell | A rating |
| Moral Care | Overton | A rating |
| Morales Advisory Services | London | A rating |
| MORALIS GROUP LIMITED | South Woodford | A rating |
| MORALY LIMITED | Bury | A rating |
| Moran's Wood Components | Warrington | A rating |
| Morar Care Group UK Limited | Bellshill | A rating |
| Morar Lodge Nursing Home Limited | Helensburgh | A rating |
| Morasiya Group Ltd T/As The Real Pizza Company | Worthing | A rating |
| MORAY COAST VET GROUP | FORRES | A rating |
| Moray Council | Elgin | A rating |
| Moraya Limited | High Wycombe | A rating |
| Morcom Autocare Ltd | Birmingham | A rating |
| MORDEN BARBERS LTD | Morden | A rating |
| Morden Builders Ltd | Aldershot | A rating |
| Morden Local Ltd | Morden | A rating |
| Morden Supermarket | Morden | A rating |
| MORDEN TUITION LTD | Morden | A rating |
| Mordor Gundogs Limited | Perth | A rating |
| MORE BLESSINZ LIMITED | Dartford | A rating |
| More Contract UK Limited | London | A rating |
| More Control (UK) Limited | Milton Keynes | A rating |
| More Experts Fast Limited | London | A rating |
| More Group (Accounting) Limited | London | A rating |
| More Hope Foundation | Glasgow | A rating |
| More House School | Farnham | A rating |
| MORE Housing Ltd | London | A rating |
| More in Common | London | A rating |
| More Partnership Ltd | Dundee | A rating |
| More Seafood limited | Paignton | A rating |
| More Than Equal Limited | London | A rating |
| More Than Lettuce LTD T/A Oliveira Kitchen | London | A rating |
| More Years Limited | Nottingham | A rating |
| more2 Limited | London | A rating |
| More2Childcare CIC Ltd | Greenwich | A rating |
| Morecambe Bay Primary Care Collaborative Limited | Lancaster | A rating |
| MORECAMBE FOOTBALL CLUB LIMITED | Morecambe | A rating |
| MOREDON STORES LTD | Swindon | A rating |
| Moreish Marketing | London | A rating |
| Moreland House Care Home LimitedT/A Moreland House Care Home | Hornchurch | A rating |
| Morena | London | A rating |
| MOREPOLYTHENE LIMITED | BLACKBURN | A rating |
| Moresand Limited | London | A rating |
| Morespace Design Ltd | New Malden | A rating |
| Moreton & Meols PCN Limited | Wallasey | A rating |
| MORETON DENTAL LIMITED | OXFORD | A rating |
| Moreton Group Practice | Wirral | A rating |
| Moreton Hall Education Limited | Oswestry | A rating |
| Moreton Health Clinic | Wirral | A rating |
| Moreton Medical Centre | Moreton, Wirral | A rating |
| Moretti Fine Art Limited T/A Moretti Gallery | London | A rating |
| MOREY SMITH LIMITED | London | A rating |
| Morgan & French Ltd | Stamford | A rating |
| Morgan Advanced Materials plc | Windsor | A rating |
| Morgan Berkeley Limited | Pinner | A rating |
| Morgan Cargo Ltd | Slough | A rating |
| Morgan Group Associates Ltd | London | A rating |
| Morgan Hill Solicitors Ltd | Ilford | A rating |
| MORGAN INGLAND LIMITED | Birmingham | A rating |
| Morgan Latif Ltd | London | A rating |
| Morgan McKinley | London | A rating |
| Morgan Menzies Ltd | Manchester | A rating |
| Morgan Philips UK Limited | London | A rating |
| Morgan Prestwich | Reigate | A rating |
| Morgan Reach Accountancy Limited | Birmingham | A rating |
| Morgan Sindall Construction & Infrastructure Ltd | Rugby | A rating |
| Morgan Sports Law Limited | London | A rating |
| Morgan Stanley UK Limited | London | A rating |