| YBM International Ltd | Tunbridge Wells | A rating |
| Ybrant Core Limited | Coventry | A rating |
| YBSM Partners Ltd | Stratford | A rating |
| YBU LTD | READING | A rating |
| YBU-SUSHI LTD | SAINT AUSTELL | A rating |
| YC INVESTMENTS LIMITED | LONDON | A rating |
| YC LIVERPOOL LTD | Manchester | A rating |
| YC Manchester LTD | Manchester | A rating |
| YC SPORTS LTD. | Cardiff | A rating |
| YCC Ltd | Acton | A rating |
| YCG Limited | London | A rating |
| YCS Group Ltd | Hounslow | A rating |
| YD Aeronautical engineering services Ltd | Brentwood | A rating |
| YD MORLEYS FRIED CHICKEN LTD T/A Morley's fried Chicken | Croydon | A rating |
| YDH International Logistics (UK) Limited | London | A rating |
| Ye Corner Tyres Limited | Watford | A rating |
| Ye Olde Fighting Cocks | St Albans | A rating |
| Yeadon Cricket Club | Leeds | A rating |
| Yealand Fund Services Limited | Peterborough | A rating |
| Yearbook Machine Limited | London | A rating |
| Yeatheridge Farm Caravan and Camping Park Ltd | Crediton | A rating |
| Yeats Contracts Ltd | Ruislip | A rating |
| Yee Kwan Ltd | Sheffield | A rating |
| Yeet Day Limited | Glasgow | A rating |
| Yelkubs Table Limited | Stockport | A rating |
| Yellow Atlas Consulting Limited | TIMPERLY | A rating |
| Yellow Box Britain Ltd | London | A rating |
| Yellow Branding & Digital Design Ltd | Belfast | A rating |
| Yellow Brick Capital (UK) Limited | London | A rating |
| YELLOW BUTTERFLY NURSERY LTD | Southall | A rating |
| Yellow Cabs 2020 Ltd. | Swansea | A rating |
| Yellow Cars Ltd | Reading | A rating |
| YELLOW CARS U.K. LIMITED | BRISTOL | A rating |
| YELLOW DOOR PRIVATE LTD T/A YELLOW DOOR GROUP | Leicester | A rating |
| Yellow Door Services Limited | Birmingham | A rating |
| Yellow Hat Security Solutions Ltd | Shropshire | A rating |
| Yellow Panther Digital Ltd | Ashton-Under-Lyne | A rating |
| Yellow Rail Limted | Derby | A rating |
| Yellow Stone Building Limited | Kent | A rating |
| Yellow Zebra Travel Ltd | Kingston upon Thames | A rating |
| Yellowave Beach Sports Venue | Brighton | A rating |
| Yellowbrick Data UK Limited | London | A rating |
| YELLOWFIN EMEA LTD | MILTON KEYNES | A rating |
| YELLOWNEST UK LIMITED | London | A rating |
| Yellowstone Biosciences Limited | Oxford | A rating |
| Yellowwoods Associates (UK) Limited | London | A rating |
| Yelo Enterprises Ltd. | Stratford Upon Avon | A rating |
| Yelo Limited | Carrickfergus | A rating |
| Yelp UK Limited | London | A rating |
| YELSPA LIMITED | Andover | A rating |
| YELTIC LIMITED | Cambridge | A rating |
| Yelverton Care LLP | PLYMOUTH | A rating |
| YEME LOGISTICS LTD | LEEDS | A rating |
| Yen Nails & Beauty Wigan Limited | Wigan | A rating |
| YENA INTERNATIONAL LIMITED | BICESTER, | A rating |
| Yendall Hunter Ltd | London | A rating |
| YENKO LTD | West Yorkshire | A rating |
| Yeo Group Limited | Felixstowe | A rating |
| Yeo Group Ltd | Felixstowe | A rating |
| YEO Messaging Ltd | Matlock | A rating |
| Yeoman Care Ltd T/A Albert House Nursing Home | Weston Super Mare | A rating |
| Yeotown London Ltd. | Barnstaple | A rating |
| Yeovil College | Yeovil | A rating |
| Yeovil Community Church | Yeovil | A rating |
| Yeovil Specsavers Limited | Yeovil | A rating |
| Yes / No Productions Ltd | Hove | A rating |
| Yes 99 Plus Ltd | Greenford | A rating |
| YES CHEF JESMOND LIMITED / DABBAWAL JESMOND | TYNE | A rating |
| YES PROPERTIES INVESTMENT LIMITED | Cambridge | A rating |
| YES TRADES LTD | Livingston | A rating |
| Yes UK Immigration Ltd | Harrow | A rating |
| Yes Ventures Ltd | Harrow | A rating |
| YES WE WILL DO COURIERS LTD | Harrow | A rating |
| Yes Yes Tech Ltd | Weybridge | A rating |
| Yeschef supplies Ltd | London | A rating |
| Yesdee Technologies Limited | Leeds | A rating |
| Yesh (UK) Ltd T/A Yash Motorbikes | Wembley | A rating |
| YESKAM LIMITED T/A SURAJ SWEET MART | WEMBLEY | A rating |
| YesMail Interactive London Ltd | London | A rating |
| Yesss (B) Electrical Ltd | Normanton | A rating |
| Yet2.com Europe Limited | Nottingham | A rating |
| YETI UK Limited | Bristol | A rating |
| YETTI VIP SERVICES LTD | London | A rating |
| YEW SUPERMARKET LTD | LONDON | A rating |
| Yew Technologies Ltd | Harrow | A rating |
| Yew Tree Nursing Home Limited | Halesowen | A rating |
| Yewbarrow Garage Ltd | Cumbria | A rating |
| Yewtreecare Limited | West Sussex | A rating |
| Yexle Limited | Milton Keynes | A rating |
| Yext Limited | London | A rating |
| YF GSIR LTD | London | A rating |
| YFA GROUP LTD | Kent | A rating |
| YFC | Redruth | A rating |
| yfg trading ltd | middlesbrough | A rating |
| yfood International GmbH | London | A rating |
| YGF CHINATOWN LTD | London | A rating |
| YGF EDINBURGH LTD | Edinburgh | A rating |
| YGHP LIMITED | Cannock | A rating |
| YGL GROUP OF ASSOCIATES LTD T/A Camelot Residential Care Home | East Sussex | A rating |
| YGL Smart Carwash Limited | London | A rating |
| YH Trading Ltd T/A Buffet Island | Birmingham | A rating |
| YH2 Capital International Limited | London | A rating |
| Yhaal House Limited T/A Yhaal House | London | A rating |
| Yhangry Limited | London | A rating |
| YHJ TRADING LTD | London | A rating |
| YHM Stores Limited t/a Choice Halal Centre | Crawley | A rating |
| YHUK Limited | London | A rating |
| Yi Catering Ltd T/A Eatoo | London | A rating |
| Yi House | Bushmills | A rating |
| Yiangou Architects Ltd | Cirencester | A rating |
| Yianis FSCR Limited T/A Canary Riverside Plaza Hotel | London | A rating |
| Yianni Motors Limited | High Wycombe | A rating |
| Yiannis Doors Limited | Sittingbourne | A rating |
| YIDIANXINYI LTD | Manchester | A rating |
| Yield Retail Solutions Ltd | Liverpool | A rating |
| Yiewsley Food Centre | Yiewsley West Drayton | A rating |
| YIFANG CAMBRIDGE LTD | Cambridge | A rating |
| Yifang Camden Town LTD | London | A rating |
| Yifang OSM Ltd | London | A rating |
| Yihai (UK) Food Ltd | Harrow | A rating |
| YILDIZ CATERING LTD | Evesham | A rating |
| YIMEI GROUP LTD | Manchester | A rating |
| YIMIN LTD | London | A rating |
| YIN CONSTRUCTIONS LTD | Manchester | A rating |
| Yindee Thai Ltd | Royston | A rating |
| Ying De Group Ltd | MANCHESTER | A rating |
| Ying Fan Education Service Company Limited | London | A rating |
| Ying Tong Group Limited | London | A rating |
| YINGBO UK LIMITED | Brighton | A rating |
| Yingte Holdings Ltd trading as The Parade Fish and Chips | Swanage | A rating |
| Yingtong Education Consultancy Ltd | London | A rating |
| Yingtuan app ltd | London | A rating |
| Yinson Renewables (UK) Limited | London | A rating |
| YIP SHING LTD | Gloucester | A rating |
| yipworld | Cumnock | A rating |
| Yiva Digital | London | A rating |
| YIYU BESPOKE CULTURAL EXPERIENCE LTD | London | A rating |
| YK Design and Build Ltd | Birmingham | A rating |
| YKG DESIGN LTD | LONDON | A rating |
| YKG LTD | LONDON | A rating |
| YKK Europe Limited | London | A rating |
| Ykone UK Limited | London | A rating |
| YKS Contractors Limited | Sutton | A rating |
| YKT HEALTH LTD T/A DALES PHARMACY | London | A rating |
| YL I Limited | London | A rating |
| YLD Limited | London | A rating |
| Ylem Energy Limited | Salford | A rating |
| YM ACCOUNTANTS LTD | London | A rating |
| YM ROOF LIMITED | CHISWICK | A rating |
| YM&U Business Management Limited | London | A rating |
| YMC Limited | London | A rating |
| YMCA Derbyshire | Derby | A rating |
| YMCA Fairthorne Group | Southampton | A rating |
| YMCA Indian Student Hostel | London | A rating |
| YMCA Lakeside | Ulverston | A rating |
| YMCA Leicestershire | Leicester | A rating |
| YMCA Norfolk | Norwich | A rating |
| YMCA St Paul's Group | Surbiton | A rating |
| YMCA Thames Gateway | Romford | A rating |
| Ymestyn | Cardiff | A rating |
| YMG CONSTRUCTIONS LTD | Dewsbury | A rating |
| YMOR LIMITED | STANMORE | A rating |
| YMP Limited T/A LDM Group / LDM Design | Manchester | A rating |
| YMR Fuel Limited | Devon | A rating |
| YMR Group Limited | Umberleigh / Nr Barnstaple | A rating |
| Ymr Retail Limited | Exeter | A rating |
| YMU Group Services Limited | London | A rating |
| YN HEALTHCARE LTD T/A 121 Pharmacy | Bedford | A rating |
| YN MOBILE AND VAPE LTD | Liverpool | A rating |
| YNR Instruments Ltd | Manchester | A rating |
| YNS Limited | Kidderminster | A rating |
| YNWA Pizza Ltd | Coalville | A rating |
| YO ROOMS LTD | Leicester | A rating |
| YO UK LIFE LTD | Birmingham | A rating |
| YOA RISK ADVISORY SERVICES LIMITED | Salford | A rating |
| Yobota | London | A rating |
| Yocare Healthcare Solutions Limited | Leeds | A rating |
| YOCTOCYOTTA LTD | ABINGDON | A rating |
| Yocuda Network UK Ltd | London | A rating |
| Yodubzz Studios Ltd | Overton | A rating |
| Yoga and sons Ltd | Exmouth | A rating |
| YOGA CARE LTD | Hounslow | A rating |
| Yogaaa Limited | Cardiff | A rating |
| Yoganathan Kapilan t/a The Convenience Store | Stockton-On-Tees | A rating |
| YOGANJALI CONSULTANCY SERVICES LTD | Newport | A rating |
| YOGARAJAH RAMESH T/A TEXACO BEBINGTON SERVICE STATION | WIRRAL | A rating |
| Yogarajah Susilan (Sole Trader) | London | A rating |
| Yogeeraj Limited | Eastbourne | A rating |
| Yogeswaran Thipakaran | Dundee | A rating |
| Yoghim Enterprises Limited T/A Delite Post Office (North Watford Post Office) | Watford | A rating |
| Yoghim Enterprises Ltd | Rickmansworth | A rating |
| YOGI ACCOUNTEX LTD | Wembley | A rating |
| YOGI BAPA LTD | SOUTHAMPTON | A rating |
| YOGI BAPA PVT LTD | Wembley | A rating |
| Yogi Convenience Store Limited | Wilthorpe | A rating |
| YOGI COURIER & TRANSPORTATION LIMITED | Essex | A rating |
| YOGI DIVINE SOCIETY (UK) | London | A rating |
| YOGI EYECARE LTD TRADING AS 20-TWENTY VISION | Chichester | A rating |
| Yogi Pharmacies Limited T/A Yogi Pharmacy | Dunmow | A rating |
| Yogi Trade Limited T/A Yogi Trade | Leicester | A rating |