| HVS Europe Ltd. | London | A rating |
| HW Bedford Limited | Kempston, | A rating |
| HW Coffee Limited | Sevenoaks | A rating |
| HW Fisher Forensic Limited | London | A rating |
| HWA MANAGEMENT CONSULTANCY UK LTD | SHEFFIELD | A rating |
| HWB Construction Ltd | London | A rating |
| HWCD Holding Ltd | London | A rating |
| HWH Restaurants (EY) Limited | London | A rating |
| HWHC Limited | London | A rating |
| HWKA Limited | London | A rating |
| HX Group Ltd | London | A rating |
| HX Hold Co Ltd | London | A rating |
| HX Trading Limited | Manchester | A rating |
| HY Accountants | London | A rating |
| HY Education Ltd t/a Apex College | London | A rating |
| HY Legal and Services Ltd | London | A rating |
| HY-PRO INTERNATIONAL LIMITED | Dunstable | A rating |
| HY10 Lifestyle Ltd | London | A rating |
| Hyatt Holdings (UK) Ltd | London | A rating |
| Hyatt Place London City East | London | A rating |
| HyBird Limited | London | A rating |
| Hyble Technology Ltd | Edinburgh | A rating |
| HYBRID ACCESS LIMITED | KINGSTON UPON THAMES | A rating |
| Hybrid Air Vehicles Limited | Bedford | A rating |
| HYBRID BARN LTD | Nottingham | A rating |
| HYBRID BATTERY UK | ROCHDALE | A rating |
| Hybrid BI Solutions Limited | Birmingham | A rating |
| HYBRID BUSINESS SOLUTIONS LTD | London | A rating |
| HYBRID CARPARTS MK LIMITED | Milton Keynes | A rating |
| HYBRID GASIFICATION LTD | Newcastle upon Tyne | A rating |
| Hybrid Instruments Limited | Lancaster | A rating |
| Hybrid Kytchens Ltd t/a kEATchen United | Glasgow | A rating |
| Hybrid Mail Solutions | BELFAST | A rating |
| HYBRID NEWS LIMITED | Bristol | A rating |
| HybridAero Limited | Cambridge | A rating |
| HYBRIDITEC LTD | Edinburgh, | A rating |
| Hybridx Ltd | Chatham | A rating |
| Hycgan Limited | Wembley | A rating |
| Hychor | Aberdeen | A rating |
| HYCM Capital Markets (UK) Limited | London | A rating |
| HYD ZAIQA TOOTING LTD | London | A rating |
| HYDAC TECHNOLOGY LIMITED | Witney | A rating |
| Hyde Academy Ltd | London | A rating |
| Hyde Convenience Store (Cheshire) Ltd | Hyde | A rating |
| HYDE CROOK NURSING HOME LTD T/A GROVE LODGE RESIDENTIAL HOME | DORCHESTER | A rating |
| Hyde Farm Limited | London | A rating |
| Hyde Global Education Ltd | London | A rating |
| Hyde Global Ltd | London | A rating |
| Hyde Housing Association | London | A rating |
| Hyde Park Special Opportunities Limited | London | A rating |
| Hydefall Limited TA Sutton Court Care Centre | Sutton | A rating |
| HYDELINE FURNITURE LTD | Milton Keynes | A rating |
| HYDENG MARINE SERVICES LIMITED | Edinburgh | A rating |
| HYDENLYNE LIMITED | WIMBORNE | A rating |
| Hyderabad Bawarchi Ltd | HOUNSLOW | A rating |
| HYDERABAD BIRYANI HOUSE LTD T/A FLAVOURS OF HYDERABAD | PRESTON | A rating |
| HYDERABAD CUISINE LTD | Leeds | A rating |
| HYDERABAD FOODS | Edinburgh | A rating |
| HYDERABAD HOUSE MULTI CUISINE LTD | LONDON | A rating |
| Hyderabad Kitchens T/A Hyderabad Flavours Limited | Hatfield | A rating |
| Hyderabad Paradise | London | A rating |
| Hyderabadi Bawarchi Ltd | London | A rating |
| HYDERABADI NAWAAB LIMITED T/A HYDERABAD WALA | Luton | A rating |
| Hyderabadi Paradise Limited | Edinburgh | A rating |
| Hyderabadi Spice Ltd | London, Greater London | A rating |
| Hyders Beds Ltd | Dewsbury | A rating |
| Hydes Brewery Ltd | Salford | A rating |
| Hydeway Limited T/A RSG Motor Group | Ascot | A rating |
| HYDRA DIESEL INNOVATIONS UK LIMITED (15349038) | ENGLAND | A rating |
| Hydra EVC Ltd | Rayleigh | A rating |
| HYDRA STUDIOS LTD | GLASGOW | A rating |
| HydraB Power Limited | Oxford | A rating |
| Hydrabad Express Ltd | Feltham | A rating |
| Hydrafacial UK Limited | Rugby | A rating |
| Hydrafact Limited | Edinburgh | A rating |
| HydraForce Hydraulics Limited | Birmingham | A rating |
| Hydralectric Group Ltd | Byfleet | A rating |
| Hydram Engineering Limited | Chilton | A rating |
| Hydrapower Dynamics Limited | Birmingham | A rating |
| Hydraquip Limited T/A Hydraquip Metal Hose Division | Northampton | A rating |
| HYDRAS IT LIMITED | Hitchin | A rating |
| Hydrasun Limited | Aberdeen | A rating |
| Hydraulic System Products Ltd | Wakefield | A rating |
| Hydreco Hydraulics Ltd | Poole | A rating |
| HydRegen Limited | Oxford | A rating |
| Hydro Aluminium Deeside Limited | Wrexham | A rating |
| Hydro Aluminium UK Limited | Alfreton | A rating |
| Hydro Building Systems UK Limited | Tewkesbury | A rating |
| HYDRO CLEANSING LIMITED | Croydon | A rating |
| Hydro Eden Ltd | Addlestone | A rating |
| Hydro International Limited | Clevedon | A rating |
| HYDRO-C LTD | Glasgow | A rating |
| Hydro-Gen Ltd Trading As Hydroplan | Wimborne | A rating |
| Hydrocore Limited | Hull | A rating |
| HYDROGEN BUILDING & MAINTENANCE LTD | London | A rating |
| Hydrogen Scotland Limited | West Lothian | A rating |
| HYDROLUMINUM LIMITED | London | A rating |
| Hydropac Limited | High Wycombe | A rating |
| Hydropath Technology Ltd | Nottingham | A rating |
| Hydrosphere UK Ltd | Hampshire | A rating |
| HydroStar Europe Ltd | Exeter | A rating |
| HydroSurv Unmanned Survey Uk Ltd | Exeter | A rating |
| Hydrotec (UK) Limited | High Wycombe | A rating |
| Hydrotechnik Test Engineering UK Ltd | Nottingham | A rating |
| Hydrowing Ltd | Penryn | A rating |
| HYDSOFT (UK) LTD | London | A rating |
| Hye Eun Ree T/A Kimchi Planet | Newcastle | A rating |
| Hyelite Home Investments Ltd | Borehamwood | A rating |
| HyFlux LTD | Swansea | A rating |
| Hygge Children's Social Care Limited | Northamptonshire | A rating |
| HyImpulse UK Ltd | Lerwick | A rating |
| Hyk Limited T/A Players | Manchester | A rating |
| Hyland Edgar Driver Limited | Winchester | A rating |
| Hyland UK Operations Limited | Maidenhead | A rating |
| Hylands Group Ltd t/a Hylands Service Station (Esso/Spar/Subway) | Leatherhead | A rating |
| Hylands House Care Ltd | Stratford upon Avon | A rating |
| Hylands School | Chelmsford | A rating |
| Hylink (UK) Digital Solution Limited | London | A rating |
| Hylo Athletics Ltd | London | A rating |
| Hylton Care | Northampton | A rating |
| Hylton Cricket Club | Sunderland | A rating |
| Hymans Robertson LLP | London | A rating |
| Hymers College | HULL | A rating |
| Hynamics UK Limited | London | A rating |
| Hyndburn Borough Council | Accrington | A rating |
| Hynedale Ltd t/a Noble Sleek | Essex | A rating |
| HYNT LABS LIMITED | LONDON | A rating |
| HYOSUNG TNS UK BRANCH | Weybridge | A rating |
| HYOSUNG UK LIMITED | New Malden | A rating |
| HYPEBEAST UK Limited | London | A rating |
| Hypecore Ltd | London | A rating |
| Hyper Apps Ltd | London | A rating |
| Hyperama PLC | Nottingham | A rating |
| Hyperbaric Consult Limited | Bollington | A rating |
| Hyperchem Ltd t/a Ronchetti Pharmacy | Enfield | A rating |
| HYPERCRITICAL LIMITED | London | A rating |
| Hyperdrive Innovation Limited | Sunderland | A rating |
| Hyperexponential Ltd | London | A rating |
| HyperGen Ltd | Harpenden | A rating |
| Hyperglance Limited | London | A rating |
| Hypergood Limited t/a Royal Gourmet | London | A rating |
| Hyperion Equity Partners Limited | London | A rating |
| Hyperion Industries Limited | London | A rating |
| Hyperion Robotics UK Ltd | Scunthorpe | A rating |
| Hyperion Systems Limited | Guildford | A rating |
| Hyperlayer Limited | London | A rating |
| Hypermotive Ltd. | Lutterworth | A rating |
| HYPEROPTIC LTD | London | A rating |
| HYPERPULSETECHNOLOGIES LTD | Leicester | A rating |
| Hyperr Ltd | Bromley | A rating |
| Hyperscience Europe Ltd | Altrincham | A rating |
| Hyperspheric solutions ltd | Cambridge | A rating |
| Hypervision Surgical LTD | London | A rating |
| Hypervolt Limited | London | A rating |
| Hypes SB UK Limited | London | A rating |
| Hypetap UK Ltd | London | A rating |
| Hypha Discovery Limited | Abingdon | A rating |
| Hypha Partners LLP | London | A rating |
| Hypha Restaurants Ltd | Chester | A rating |
| Hyphen Archi Ltd | Winchester | A rating |
| Hyphenate Life Limited | London | A rating |
| Hypixel Studios Ltd | Londonderry | A rating |
| HYPNOTIQUE LTD | London | A rating |
| Hypus Ltd | London | A rating |
| Hyran Technologies Ltd | Cambridge | A rating |
| HYSERVE LIMITED | Birtley | A rating |
| Hyserve Marine Ltd | Gateshead | A rating |
| Hyson Green Carrington cricket club | Nottingham | A rating |
| HYSON GREEN DEVELOPMENTS LIMITED | Nottingham | A rating |
| Hyspec Engineering Limited | Stewarton | A rating |
| Hyster-Yale Group | Irvine | A rating |
| Hytera Communications (UK) Co., Ltd | Slough | A rating |
| HYTHE ROAD STORES | Swindon | A rating |
| HYTHE SERVICE STATION LIMITED | HYTHE | A rating |
| Hytronik International LTD | Manchester | A rating |
| Hyundai Capital UK Limited | Reigate | A rating |
| Hyundai Marine & Fire Insurance | London | A rating |
| Hyundai Motor UK Ltd | Leatherhead | A rating |
| Hyundai Oilbank Co., Ltd. London Branch | London | A rating |
| Hyva (U.K.) Limited | Manchester | A rating |
| Hyve International Events Limited | London | A rating |
| Hyve Limited | Brighton | A rating |
| Hywel Dda Health Board | Aberystwyth | A rating |
| Hywell Limited | Stanmore | A rating |
| HZ Design Solutions Ltd | Cardiff | A rating |
| HZ POWER Limited | London | A rating |
| HZYT UK LTD | LONDON | A rating |