| HSSE Solutions Limited | London | A rating |
| HSSMI Consulting Limited | London | A rating |
| HSSSG SERVICES LTD | Birmingham | A rating |
| Hstar Ventures Ltd | Leigh | A rating |
| HSVP LTD | Liversedge | A rating |
| HSYE Limited | Macclesfield | A rating |
| HSZ CAKE STUDIO LTD | Dunfermline | A rating |
| Hsz Foods Ltd | Wrexham | A rating |
| HSZ Housing Management Ltd | Birmingham | A rating |
| HT ACCOUNTANTS & CO LLP | Stratford | A rating |
| HT Company (Essex) Ltd | Gants Hill | A rating |
| HT Digital Ltd | London | A rating |
| HT Digital Services Ltd | London | A rating |
| HT ENTERPRISE BRADFORD LTD T/A FRANKSTER'S | BRADFORD | A rating |
| HT Group Limited T/a The Mint Room | Barry | A rating |
| HT LONDON E1 LTD T/A CANARY HOMES | London | A rating |
| HT Pest Proofing | Gloucester | A rating |
| HT Physio Ltd | Farnham | A rating |
| HT PROSPERITY LIMITED | London | A rating |
| HT RESEARCH UK LTD | London | A rating |
| HT SOFTWARE UK LTD | Chadwell Heath | A rating |
| HT TRADING LTD | London | A rating |
| HTA Design LLP | London | A rating |
| HTA Freshfoods Ltd | Bradford | A rating |
| HTE Consultancy Limited | Mitcham | A rating |
| Htec Ltd | Southampton | A rating |
| HTF ENTERPRISES LTD | MANCHESTER | A rating |
| HTG ACCOUNTANTS LIMITED | Lincoln | A rating |
| HTH Hospitality LTD t/a Balmoral Hotel | Belfast | A rating |
| HTI Education Ltd | Manchester | A rating |
| HTM CLEANING LTD | St Albans | A rating |
| HTM CLEANNING LTD | Luton | A rating |
| HTR CARE AND RECRUITMENT LIMITED | Uxbridge | A rating |
| HTS Developments Limited | Lincoln | A rating |
| HTS Group LTD | Harlow | A rating |
| HTS Vehicle Sales Ltd | Helpringham | A rating |
| HTT MOBILES LIMITED | Manchster | A rating |
| Httpool Holdings UK Limited | Manchester | A rating |
| HTU LIFE LTD | Witney | A rating |
| HTY LIMITED | Bristol | A rating |
| HTZ Limited | East Grinstead | A rating |
| HU EMPIRE LTD T/A Jewel of Skye | Bathgate | A rating |
| HU Group Ltd | Manchester | A rating |
| HU Investments Ltd | London | A rating |
| Hu-Tech Experts Ltd | Swansea | A rating |
| Hua Hsia Chinese Tuition Limited | London | A rating |
| Hua Nan Commercial Bank Ltd | London | A rating |
| Hua Ran Ltd | St Andrews | A rating |
| Hua Xin Ltd | Manchester | A rating |
| HUA YIN FINANCE LIMITED | London | A rating |
| Hua Yun (UK) Ltd | London | A rating |
| Huacracocha Ventures Ltd T/A Hosanna London | London | A rating |
| Huaerduoduo Ltd | Salford | A rating |
| Huamei Cake House Limited | Birmingham | A rating |
| Huang Builders Limited | London | A rating |
| Huang Ling trading as Number 10 Restaurant | London | A rating |
| HUANG TING TEA LONDON LTD | London | A rating |
| HUANGS CATERING LIMITED | LONDON | A rating |
| Huawei Technologies (UK) Co., Ltd | Reading | A rating |
| Huawei Technologies Research & Development (UK) Limited | Cambridge | A rating |
| HUB CRAFT TRADING LTD | HAMMERSMITH | A rating |
| Hub Design and Construction Ltd | London | A rating |
| Hub E-Com Logistics Ltd | Hampton | A rating |
| Hub Enterprises Newport Ltd | Newport | A rating |
| HUB MATE LTD | LONDON | A rating |
| HUB Petroleum Limited T/A Bettws Service Station | Newport | A rating |
| Hub Platform Technology Partners Ltd | London | A rating |
| Hub Productions Limited | London | A rating |
| HUB21 Learning UK Limited | Marlow | A rating |
| Hub2Asia Limited t/a QIMA | London | A rating |
| HUBBARD PRODUCTS LIMITED | IPSWICH | A rating |
| Hubble Composites Ltd | London | A rating |
| HUBBLE PROPERTY LTD | Northolt | A rating |
| Hubbub Foundation UK | London | A rating |
| Huber Parking UK Limited | Langley | A rating |
| HUBER+SUHNER Polatis | Cambridge | A rating |
| Hubexo UK Limited | Newcastle Upon Tyne | A rating |
| Hubl Logistics Ltd | Newark | A rating |
| Huble Digital Limited | London | A rating |
| HUBLOUNGE RASOI LONDON LTD | LONDON | A rating |
| Hublounge Rasoi Stratford City Ltd | LONDON | A rating |
| Hublounge Rasoi Stratford City LTD t/a Indigo Rasoi | London | A rating |
| Hubner UK Limited | Derby | A rating |
| Huboo Tech LTD. | Bristol | A rating |
| Hubpay Limited | Gerrards Cross | A rating |
| HubSpace (UK) Ltd | London | A rating |
| Hubspace London Ltd | London | A rating |
| HubSpot UK Holdings Limited | London | A rating |
| HUC CORPORATION LTD | Birmingham | A rating |
| Hucknall Cricket Club | Hucknall | A rating |
| Hucknall Road Medical Group | Nottingham | A rating |
| Huco Engineering Industries Ltd | Hertford | A rating |
| Hud Tex Ltd | London | A rating |
| Hudah Group Limited | Manchester | A rating |
| Huddersfield Cake Box Limited t/as Egg Free Cake Box | Huddersfield | A rating |
| HUDDERSFIELD CHA CHA CHAI HAIDERY LTD | HUDDERSFIELD | A rating |
| Huddersfield Giants Ltd | Huddersfield | A rating |
| Huddle Utilities Ltd | London | A rating |
| Hudl UK Limited | London | A rating |
| HUDSON (HARBOUR RESIDENTIAL) LIMITED | Portishead | B rating |
| HUDSON (LORNE) LIMITED | Hamilton | A rating |
| HUDSON (PITKERRO) LIMITED | DUNDEE | A rating |
| HUDSON (SANDIACRE) LIMITED | Nottingham | A rating |
| Hudson Advisors UK Ltd. | London | A rating |
| Hudson Bay Capital UK LLP | London | A rating |
| Hudson Boat Works UK Lt.d | Reading | A rating |
| Hudson Cosmedic Limited | Newquay | A rating |
| HUDSON MORGAN WILLIAMS LIMITED | London | A rating |
| Hudson Outsourcing Ltd | Durham | A rating |
| Hudson River Trading Europe Ltd. | London | A rating |
| Hudson RPO Limited | Salford | A rating |
| Hudson Sandler LLP | London | A rating |
| Hudson Shoes Agencies | London | A rating |
| Hue & Cry | London | A rating |
| Huel Limited | Tring | A rating |
| HUEY GAMES LTD | Manchester | A rating |
| HUFFAZ TRAVEL EXCHANGE LTD | Horley | A rating |
| Huge UK Limited | London | A rating |
| HUGEBINARY LTD | London | A rating |
| Huggard | Cardiff | A rating |
| Hugh Baird College | Liverpool | A rating |
| HUGH CARTWRIGHT & AMIN | London | A rating |
| Hugh James | Cardiff | A rating |
| Hugh Steeper Limited | Leeds | A rating |
| Hugh Symons Exchange LTD | Poole | A rating |
| Hugh-Jones LLP | London | A rating |
| Hughes Electronics Ltd | London | A rating |
| Hughes Hall | Cambridge | A rating |
| Hughes Property Partners Limited | Richmond, London | A rating |
| Hughes Safety Showers Ltd | Stockport | A rating |
| Hughes Steel Fabrication Ltd | Magherafelt | A rating |
| HUGHES SYSTIQUE PRIVATE LTD | High Wycombe | A rating |
| HUGO BOSS UK Ltd | London | A rating |
| Hugo Harrison Limited | London | A rating |
| Hugo Technologies Limited | Bromley | A rating |
| HUGUENOT SERVICES LIMITED | LONDON | A rating |
| Huhtamaki (Lurgan) Ltd | Craigavon | A rating |
| Huhtamaki BCP Limited | Blackburn | A rating |
| Huientz UK Ltd | London | A rating |
| HUIKANG HEALTHCARE LTD | Buckinghamshire | A rating |
| Hujjat-ul-Islam Hitchin Mosque | Hitchin | A rating |
| Huka Ltd | Leeds | A rating |
| Hukam Haulage Ltd | Leicester | A rating |
| Hulatech Limited | Newton Abbot | A rating |
| Hulbert Enterprises Ltd | Shrewsbury | A rating |
| Huldra Ltd | Hemel Hempstead | A rating |
| Hull City Council | Hull | A rating |
| Hull City Tigers Limited | Hull | A rating |
| Hull Kingston Rovers RLFC | Hull | A rating |
| Hull Pound Plus LTD | Hull | A rating |
| Hull Serviced Apartments Ltd. | Hull | A rating |
| Hull Super League Limited | Hull | A rating |
| Hull University Students' Union Ltd | Hull | A rating |
| Hull University Teaching Hospitals NHS Trust | Hull | A rating |
| Hull Visionplus Ltd T/A Hull Specsavers | Hull | A rating |
| Hull Zingari Cricket Club | Hull | A rating |
| Hulley & Kirkwood Consulting Engineers Ltd | Glasgow | A rating |
| hullo Aircrew Ltd | Kidlington | A rating |
| HULLREPAIRCENTRE LIMITED | HULL | A rating |
| HULLSTRAP LTD | Croydon | A rating |
| Hulme Express Ltd | Manchester | A rating |
| Hulme Hall Banqueting catering Limited | Wirral | A rating |
| Hulme Subway Ltd | Manchester | A rating |
| Hult International Business School | Bloomsbury | A rating |
| Hult Recruiting Services | London | A rating |
| Hult Support Services Ltd | London | A rating |
| Hulton Care home | Birmingham | A rating |
| HUM CASH & CARRY LTD | Hayes | A rating |
| Hum2n Ltd | London | A rating |
| Huma Retails Ltd | York | A rating |
| HUMA THERAPEUTICS LIMITED | London | A rating |
| Humaan Co UK Ltd | London | A rating |
| Humaans Software UK Limited | London | A rating |
| Humac Engineering | Dromore | A rating |
| Humain Limited | Belfast | A rating |
| Human After All Limited | London | A rating |
| Human Aid & Advocacy | London | A rating |
| Human Appeal | Cheadle | A rating |
| Human Boundary Ventures Ltd | London | A rating |
| Human Capital Search Ltd | London | A rating |
| Human Digital Twin Limited | London | A rating |
| Human Fertilisation & Embryology Authority | London | A rating |
| Human Forest Ltd | London | A rating |
| Human Made Limited | Matlock | A rating |
| Human Made Machine Limited | London | A rating |
| Human Reliability Associates | Dalton | A rating |
| Human Relief Foundation | Bradford | A rating |
| Human Resources Business Solutions | London | A rating |
| Human Rights Project Management Ltd | London | A rating |
| Human Rights Watch, London Branch | London | A rating |
| Human Security UK Limited | Altrincham | A rating |
| Human Support Group Ltd - (HSG) | Nottingham | A rating |
| HUMANAYZ LTD | Rye | A rating |
| Humanicare Limited | Stanmore | A rating |
| HUMANIFY | BIRMINGHAM | A rating |
| Humanihut (UK) Ltd | Bristol | A rating |
| Humanists International 2020 | Glasgow | A rating |
| Humanitarian Aid Relief Trust (HART) | Bristol | A rating |
| Humanitarian Operations | London | A rating |
| HUMANITY CARE RELIEF | NELSON | A rating |