| Aughton Surgery | Ormskirk | A rating |
| Augment Risk Services Limited | London | A rating |
| Augmenta Global ltd | Chelmsford | A rating |
| Augmentable Trading Ltd TA Kinghill Stores | Dursley | A rating |
| Augmentia Ltd | London | A rating |
| Augur Initiative Ltd | London | A rating |
| Augurium Ltd | Maldon | A rating |
| August (GBR) Pty Ltd | Manchester | A rating |
| August International Ltd. | Hoddesdon | A rating |
| AUGUST LEADERSHIP LIMITED | ENGLAND | A rating |
| August Martyn Accountants Limited | Luton | A rating |
| Augusta & Co Limited | London | A rating |
| Augusta Aiken & Associates Limited | London | A rating |
| Augusta Care Limited | Peterborough | A rating |
| AUGUSTA HITECH LIMITED | London | A rating |
| Augusta Ventures Limited | London | A rating |
| Augustea Shipping Services Limited | London | A rating |
| Augustinian Sisters | London | A rating |
| Augustinians of the Assumption | London | A rating |
| Augustus Adams Limited | London | A rating |
| Augustus Martin Ltd | London | A rating |
| AUIS MALIK LIMITED | BLACKHEATH | A rating |
| Aujla Management Ltd | Falkirk | A rating |
| Auka Productions Limited | Croydon | A rating |
| Aukera UK Limited | London | A rating |
| Aukett Swanke | London | A rating |
| Auld Cross Keys Inn | Hawick | A rating |
| Aulic Limited T/A The White Hart | Windsor | A rating |
| Aulysius Ltd | London | A rating |
| AUM Care Group (UK) Limited | Southall | A rating |
| AUM Construction Ltd | Wednesbury | A rating |
| Aum Krupa Ltd T/A SureCare Tameside & Oldham | ASHTON-UNDER-LYNE | A rating |
| AUM LOGISTICS LIMITED | RADLETT | A rating |
| Aum Sairam Ltd T/A The Paper Shop | London | A rating |
| AUM SOUTH WEST LTD | Bristol | A rating |
| AUM TRADING LTD | Charlton | A rating |
| AUMAXUM LTD | LONDON | A rating |
| AUMKAR LTD | Staleybridge | A rating |
| AUMKAR SWEETS & SAVOURIES LIMITED | HARROW | A rating |
| AUMKARA LTD | CAMBERLEY | A rating |
| Aumovio Trading UK Ltd | Birmingham | A rating |
| AUN LTD | Bletchley | A rating |
| AUN MEDICAL LTD | BARTON SEAGRAVE | A rating |
| Aunger Wareham Health Professionals Ltd | London | A rating |
| Auntie Anne's Pretzels Staines | London | A rating |
| Auny LTD | Slough | A rating |
| Auquan Ltd | London | A rating |
| AUR CONSULTANTS LTD T/A DHABA | Blackburn | A rating |
| Aura (Oxford) Limited | Oxford | A rating |
| Aura Assets Management Limited | London | A rating |
| Aura Beauty & Aesthetics Whiteley Ltd | Whiteley | A rating |
| AURA BIRMINGHAM EVENTS LTD | BIRMINGHAM | A rating |
| Aura Care Homes Limited | Waunarlwydd | A rating |
| Aura Creative Limited | Henley-on-Thames | A rating |
| Aura Energy Group Limited | Northolt | A rating |
| Aura Energy UK Limited | London | UK Expansion Worker: Provisional |
| Aura Financial LLP | London | A rating |
| Aura Fire Ltd | London | A rating |
| Aura Hexaa LLP | London | A rating |
| Aura Power Developments Ltd | Bristol | A rating |
| Aura Tan & Beauty Ltd | Watford | A rating |
| Aura Technical Services Ltd | Wilmslow | A rating |
| Aura Veterinary Limited | GUILDFORD | A rating |
| Aura Works | Redditch | A rating |
| AURAGABRIEL LIMITED | London | A rating |
| Auramax Limited | London | A rating |
| AuraQ Limited | Malvern | A rating |
| Auratus Services (UK) Limited | London | A rating |
| AURCEN CONSULTING LTD | London | A rating |
| Aurelia Aylesbury | Aylesbury | A rating |
| Aurelia Pictures Ltd. | Lingfield | A rating |
| Aurem Care (Kilburn) Limited | London | A rating |
| AUREOS ENERGY LIMITED | Cheshire | A rating |
| Auria Accountancy (Herts ) Ltd | Herts | A rating |
| AURIC GOLD LTD | London | A rating |
| Auriemma Consulting UK Ltd | London | A rating |
| Aurionpro (UK) Ltd | Billinghurst | A rating |
| Auris Restaurant & Lounge Ltd | Milton Keynes | A rating |
| Aurium Capital Markets LLP | London | A rating |
| AUROH LTD | Nottingham | A rating |
| Auronova Consulting Limited | Harrow | A rating |
| Auror Europe Limited | London | A rating |
| AURORA ALCHEMY LIMITED | London | A rating |
| Aurora Avionics | Edinburgh | A rating |
| Aurora Building Envelope Specialists Ltd | Nuneaton | A rating |
| Aurora Care and Education OpCo Ltd | Gloucester | A rating |
| AURORA ENERGY RESEARCH LTD | Oxford | A rating |
| Aurora Energy Services Ltd | Inverness | A rating |
| Aurora Future Technologies Limited | London | A rating |
| AURORA GLAZING LTD | Hertfordshire | A rating |
| AURORA GLOBAL LTD | LONDON | A rating |
| Aurora Healthcare Communications Limited | London | A rating |
| AURORA KITCHEN LTD | Birmingham | A rating |
| Aurora Power Consulting Ltd | Bristol | A rating |
| Aurora Quality Care | London | A rating |
| Aurora World Ltd | Basingstoke | A rating |
| AURORAS TAKE AWAYS LTD | Worcester | A rating |
| AURORION LUXDRIVE LTD | London | A rating |
| Aurous Pizza Limited T/A Dominos Pizza | London | A rating |
| Aurous Pizza Ltd T/A Dominos Pizza | London | A rating |
| Aurous Technology Limited | London | A rating |
| Aurum Solutions Ltd | Reading | A rating |
| AusDiagnostics UK Ltd | Hertfordshire | A rating |
| Austability Group | London | A rating |
| AUSTEN-JONES SOLICITORS LIMITED | London | A rating |
| Austerlands Cricket Club | Oldham | A rating |
| Austerlitz Labs Limited | London | A rating |
| Austin Consultants Ltd | London | A rating |
| Austin David Ltd | London | A rating |
| Austin Friars | Carlisle | A rating |
| Austin Partnership Limited | Cardiff | A rating |
| Austin Professional Resourcing LLP | London | A rating |
| Austin-Smith:Lord Ltd. | Liverpool | A rating |
| Austinracing Limited | Barcombe | A rating |
| australasia ltd | knutsford | A rating |
| Australasian Recruitment Company Limited | Chester | A rating |
| Australia & New Zealand Banking Group Ltd | London | A rating |
| Australia Post Global eCommerce Solutions (UK) Ltd | Milton Keynes | A rating |
| Australian Business | London | A rating |
| Australian High Commission | London | A rating |
| Australian Pacific Touring (U.K.) Ltd | London | A rating |
| AUSTRALIAN SUBMARINE CORPORATION LIMITED | London | A rating |
| Australian Vintage (UK) Ltd | London | A rating |
| Australiansuper (UK) Ltd | London | A rating |
| Austrian National Tourist Office | London | A rating |
| Ausurus Group Ltd | Warrington | A rating |
| Autel Europe UK Limited | Borehamwood | A rating |
| Autex Acoustics Limited | Huddersfield | A rating |
| Authcode Limited | Inverkeithing | A rating |
| AUTHENTIC AFRICAN FOOD STORE LTD | Hull | A rating |
| Authentic Education Group | Poole | A rating |
| Authentic foods Distribution Ltd | Wolverhampton | A rating |
| AUTHENTIC HOTPOT LIMITED | Bristol | A rating |
| Authentic Island Foods Ltd T/a Jerk Island Gril | South End on Sea | A rating |
| Authentic Italian Ltd T/A Tarantino Hornchurch | Romford | A rating |
| Authentic Kare | LEICESTER | A rating |
| Authentic Kerala Cuisine limited | London | A rating |
| AUTHENTIC SPICE NORTH WEST LIMITED | Porthmadog | A rating |
| Authentic Word Ministries UK | London | A rating |
| AUTHENTIQUE LA BOULANGERIE LTD | LONDON | A rating |
| Authentise Ltd | London | A rating |
| Authum Care Limited | Hitchin | A rating |
| Autichem Ltd | Warrington | A rating |
| Autifony Therapeutics | Stevenage | A rating |
| Autify Digital Ltd | Nottingham | A rating |
| AUTISM AT KINGWOOD | Didcot | A rating |
| Autism Centred Care Limited | Bedford | A rating |
| Autism Consultancy Services Ltd | High Wycombe | A rating |
| Autism East Midlands | Worksop | A rating |
| Autism LIfe Centres CIC | Tonypandy | A rating |
| Autism Partnership London LTD | London | A rating |
| Autism Together | Wirral | A rating |
| Autism West Midlands | Birmingham | A rating |
| AUTO ASSIST SCOTLAND LTD | Glasgow | A rating |
| Auto Bodycraft | Dewsbury | A rating |
| Auto Claims Assist Ltd | Manchester | A rating |
| AUTO CLINIC (HIGH WYCOMBE) LIMITED | High Wycombe | A rating |
| Auto Ease ltd | Chesterfield | A rating |
| Auto Easy Network Limited | Rugby | A rating |
| Auto Expert Servicing Limited | Southall | A rating |
| AUTO FIX (LONDON) LIMITED | LONDON | A rating |
| AUTO GARAGE NETWORK LTD | Melton Mowbray | A rating |
| AUTO HUB & TRADING LTD | West Bromwich | A rating |
| Auto Imperial Ltd T/A Imperial Auto Cars | Ilford | A rating |
| Auto Mall Ltd | Dunstable | A rating |
| Auto Network (GB) Limited | LIVERPOOL | A rating |
| AUTO OASIS LIMITED | Dagenham | A rating |
| Auto Planet London Limited | London | A rating |
| Auto Planet Ltd | Milton Keynes | A rating |
| AUTO PRESTIGE LONDON LTD | Chesham | A rating |
| AUTO PRO CARS LTD | Bedford | A rating |
| AUTO PRO-FIT LTD | WOLVERHAMPTON | A rating |
| AUTO RIDER LTD | Stockport | A rating |
| Auto Salvage International Limited | Oldham | A rating |
| AUTO SERVE VEHICLE SOLUTIONS LTD | WEMBLEY | A rating |
| Auto Service Centre | Birmingham | A rating |
| Auto Services Perth Ltd | PERTH | A rating |
| Auto Show Ltd | Hemel Hempstead | A rating |
| Auto Solutions & Parts Limited | Birmingham | A rating |
| AUTO SPA HAND CAR WASH LTD | Southampton | A rating |
| Auto Specialist Limited | Bolton | A rating |
| AUTO SPECTRUM 2 LTD T/A AUTO SPECTRUM | WELLINGBOROUGH | A rating |
| Auto Styling Truckman Group Ltd | Dudley | A rating |
| AUTO TECNIX LIMITED | LONDON | A rating |
| AUTO TRADE VALLEY LTD | Essex | A rating |
| AUTO VALUE CAR PARTS UK LTD | Perivale | A rating |
| Auto Vision Limited | Birmingham | A rating |
| AUTO WEST LONDON LIMITED | LONDON | A rating |
| AUTO X LIMITED | Slough | A rating |
| Auto Zone Peterborough Ltd | Luton | A rating |
| Auto-Trail V R Limited | Grimsby | A rating |
| Auto400 Limited | Wembley | A rating |
| AUTO99 LTD | Walton-On-Thames | A rating |
| AUTOACER LTD | London | A rating |
| AUTOBARN LONDON LTD | SLOUGH | A rating |
| Autobuzz Limited | Sheffield | A rating |
| AUTOCARE MOTORS LIMITED | NEW MALDEN | A rating |
| Autocastle Limited T/A Autosave | Fulham, London | A rating |
| AUTOCENTRIC LTD | Swanscombe | A rating |
| AUTOCONTROL PROCESS INSTRUMENTATION LTD | Wythenshawe | A rating |