| ID Outdoor Advertising Ltd | Witham | A rating |
| ID Ward Ltd T/A Anonymised | London | A rating |
| ID-Pal UK Limited | Ross-On-Wye | A rating |
| ID1 LTD | London | A rating |
| Idaara Maarif-e-Islam (Hussainia Mosque & Community Centre) | Birmingham | A rating |
| IDALTU Limited | Deeside | A rating |
| IDAQ LIMITED | Sheffield | A rating |
| Idara-e-Jaaferiya | Tooting | A rating |
| IDASH SOLUTIONS LIMITED | St Neots | A rating |
| Idatamaze Limited | Rugby | A rating |
| IDC UK Limited | London | A rating |
| IDE Water Solutions UK Ltd | London | A rating |
| Ide&s Dorking Ltd | Dorking | A rating |
| IDEA ALLIANCE LTD | Croydon | A rating |
| IDEA INFINITY LTD | Stockport | A rating |
| IDEABEAN SOFTWARE TECHNOLOGY LTD | keighley | A rating |
| IDeaf - London Deaf Information Service Limited | London | A rating |
| Ideafruit UK Limited | Harlaxton | A rating |
| IDEAL ACCOUNTANCY LTD | Swindon, | A rating |
| Ideal Back Office Solution Ltd | Harrow | A rating |
| Ideal Boilers Ltd | Hull | A rating |
| Ideal Care Services Ltd | Kent | A rating |
| Ideal Centre Hull Limited | Hull | A rating |
| Ideal Choices | Liverpool | A rating |
| IDEAL COMPUTING.CO.UK LIMITED | EDINBURGH | A rating |
| Ideal Dairies Ltd | Nottingham | A rating |
| IDEAL DOUBLE GLAZING LTD | Tilbury | A rating |
| IDEAL ENERGY SOLUTIONS PRIVATE LTD | Birmingham | A rating |
| IDEAL FITTED BEDROOMS LTD | Greenford | A rating |
| IDEAL HAIR STYLE | Burnley | A rating |
| Ideal Hajj & Umrah ltd | London | A rating |
| IDEAL HEATING & PLUMBING SERVICES LTD | Birmingham | A rating |
| IDEAL HEATING SOLUTIONS LTD | Dagenham | A rating |
| Ideal Home Care Ltd | Telford | A rating |
| Ideal Homeware Limited | Slough | A rating |
| IDEAL INTERNATIONAL LOGISTICS UK LTD | London | A rating |
| ideal letting homes | London | A rating |
| IDEAL LOGISTICS & SERVICES LTD | Manchester | A rating |
| Ideal Medical Solutions Ltd | Epsom | A rating |
| IDEAL MOBILE JUNCTION LIMITED | Walsall | A rating |
| Ideal Networks | Brighton | A rating |
| IDEAL ONLINE LIMITED | MANCHESTER | A rating |
| IDEAL PLUMBING AND BATHROOMS DIY LTD | London, | A rating |
| Ideal Properties (UK) Ltd | Luton | A rating |
| Ideal Property Consultant | London | A rating |
| Ideal Recycling Limited | Manchester | A rating |
| Ideal Smile Limited | Walsall | A rating |
| Ideal Social Care Group LTD | Peterborough | A rating |
| IDEAL SOLICITORS | LONDON | A rating |
| Ideal Standard (UK) Ltd | Hull | A rating |
| IDEAL STORE | NEWPORT | A rating |
| IDEAL TECH LONDON LIMITED | Ilford | A rating |
| Ideal UK LTD | Chelmsford | A rating |
| IDEAL WARREN UK LTD | London | A rating |
| IDEALISTIC FINANCIAL SERVICES LTD | CAMBRIDGE | A rating |
| IDEALISTIC MORTGAGE SERVICES LTD | FULBOURN | A rating |
| iDeals Solutions Group Limited | London | A rating |
| Ideals UK Packaging Ltd | Bolton | A rating |
| Ideanomics Services Ltd | Newcastle Upon Tyne | A rating |
| Ideapharma Ltd | London | A rating |
| IDEAS LAB LTD | Warwick | A rating |
| Ideaworks (London) Ltd | Faversham | A rating |
| IDEE Ltd | London | A rating |
| Idemia Identity & Security UK Limited | Wokingham | A rating |
| IDEMIA UK Ltd | Tewkesbury | A rating |
| Idemitsu Europe Ltd | Bexley | UK Expansion Worker: Provisional |
| IDEMS International Community Interest Company | Reading, | A rating |
| Idenfo Limited | Norwich | A rating |
| Idenna Ltd | Newquay | A rating |
| iDentical Dental Laboratory LTD | London | A rating |
| Identified Health Care Ltd | Newport | A rating |
| Identify Web Design Ltd | Wakefield | A rating |
| Identifymobile Limited | Saffron Walden | A rating |
| IDENTITY CARE HOUSING LTD | Nelson | A rating |
| Identity Holdings Limited | Westham | A rating |
| Identity Youth Project | Great Yarmouth | A rating |
| IDEO LLC | London | A rating |
| IDEO LP | London | A rating |
| Ideology Deals Ltd | Hounslow | A rating |
| Ideotech Ltd | Uxbridge | A rating |
| Ides Global Limited | Watford | A rating |
| IDEXX Laboratories | Wetherby | A rating |
| IDG Communications Ltd | London | A rating |
| IDG Security UK Ltd | London | A rating |
| IDI PLUMBING LTD | Enfield | A rating |
| IDIA'S COMMUNITY KITCHEN | London | A rating |
| IDIADA Automotive Technology UK Ltd | Nuneaton | A rating |
| Idiculla Solicitors | Southampton | A rating |
| Idili Live Ltd | Guildford | A rating |
| IDIS EUROPE LTD | BRENTFORD | A rating |
| Idle Medical Centre | Bradford | A rating |
| Idlehurst Asset Management Limited | Kingston Upon Thames | A rating |
| IDM ENGINEERING (CHESTER) LIMITED | ELLESEMERE PORT | A rating |
| IDM Practical Solutions LTD | Wembley | A rating |
| IDMV Group Ltd | Glasgow | A rating |
| IDNOW UK Limited | London | A rating |
| Idol Optics UK Ltd | Salisbury | A rating |
| IDOM (UK) LTD | London | A rating |
| Idomoo UK Limited | London | A rating |
| Idox Software Ltd. | Woking | A rating |
| IDP Connect Ltd | London | A rating |
| IDP Landscape Ltd | Coventry | A rating |
| IDP West Midlands Limited | Coventry | A rating |
| IDR Solutions Limited | Tonbridge | A rating |
| IDRAK AI LTD | London | A rating |
| IDRE ESIA FOOD STORE LTD | Glasgow | A rating |
| IDRISSI HOLDINGS LTD | Wellingborough | A rating |
| idroneimages ltd 361748285 | London | A rating |
| IDS Logic UK Limited | Leeds | A rating |
| IDS SOLICITORS LTD | Ilford | A rating |
| IDS TECHNOLOGY LIMITED | London | A rating |
| IDTechEx Ltd | Cambridge | A rating |
| IDUNA OMA LIMITED | Manchester | A rating |
| Idverde Limited | Coventry | A rating |
| Idx Corporation London Ltd | Swindon | A rating |
| IDX Technology Europe Ltd | Slough | A rating |
| IE SERVICES LTD | Morden | A rating |
| IEA Environmental Projects Ltd | Cheltenham | A rating |
| IEC LIMITED | Poole | A rating |
| iEducation Limited | London | A rating |
| IEG Installation Ltd | Watford | A rating |
| IEMS LONDON LIMITED | London | A rating |
| IEMS PROPERTIES LIMITED | LONDON | B rating |
| IES | Bristol | A rating |
| IES London | London | A rating |
| IES Utilities Group Ltd | Manchester | A rating |
| Iesis Special Structures Ltd | London | A rating |
| Ieso Digital Health Limited | Cambridge | A rating |
| IET Limited | Nottingham | A rating |
| IEXPAND CONSULTANCY SERVICES LIMITED | Twickenham | A rating |
| If Only If Ltd | London | A rating |
| IFA ONLINE LTD | Uxbridge | A rating |
| IFamily Limited | London | A rating |
| IFAST Global Bank Limited | London | A rating |
| Ifchor Galbraiths UK Limited | London | A rating |
| IFCO SYSTEMS UK LTD | PRINCES RISBOROUGH | A rating |
| IFE Global Logistics (Airfreight) Ltd | Hounslow | A rating |
| IFF Research Ltd | London | A rating |
| IFFASH AND CO LTD | Inchinnan | A rating |
| IFFI CUTS LTD | London | A rating |
| IFFIS Direct Limited | London | A rating |
| IFG Food Ltd t/a Instanbul Food Gate | London | A rating |
| Ifield Cricket Club | London | A rating |
| IFILM B LTD | London | A rating |
| IFIMI Limited | London | A rating |
| iFindTech Ltd | Brentwood | A rating |
| Ifinity Global Ltd | London | A rating |
| IFIT Motors Ltd | Perivale | A rating |
| IFIT Solutions LTD | London | A rating |
| IFIX COMPUTING LTD | Letchworth Garden City | A rating |
| IFIX ELECTRICS LTD | LONDON | A rating |
| IFIX GADGETS LIMITED | Guildford | A rating |
| IFIX SMASH LIMITED | liverpool | A rating |
| IFIXMOBILE LIMITED | Hounslow | A rating |
| IFIXNOW LTD | London | A rating |
| IFIXTECH 5G LTD | Bury | A rating |
| IFIXXTECH LTD | Manchester | A rating |
| IFL Furniture Contracts Limited | London | A rating |
| iFLY Indoor Skydiving Ltd | Worcester | A rating |
| ifm electronic ltd | Hampton | A rating |
| IfM Engage Ltd | Cambridge | A rating |
| IFM Investors (UK) Ltd | London | A rating |
| Ifor Williams Trailers Limited | Corwen | A rating |
| Iford Arts Ltd | Bradford-on-Avon | A rating |
| Iformis Limited | Edinburgh | A rating |
| IFPI Secretariat | London | A rating |
| IFS GLOBAL MARKETING LIMITED T/A PROPERTY SOLUTIONS | BIRMINGHAM | A rating |
| IFSA UK LIMITED | LONDON | A rating |
| Ifte and Iqram Ltd | London | A rating |
| IFTIKHAR ALI T/A FORMANS AUTO CENTRE | BIRMINGHAM | A rating |
| Iftin Care LTD | London | A rating |
| IFUTURE CONSULTANT LTD | Oxford | A rating |
| IFX (UK) Limited | London | A rating |
| IG CHAI LTD | London | A rating |
| IG Design Group PLC | Newport Pagnell | A rating |
| IG FOODS UK LIMITED | LONDON | A rating |
| IG Group Holdings plc | London | A rating |
| IG KHAN INVESTMENT LTD | PETERBOROUGH | A rating |
| IG Metal Recycling Limited | Newark | A rating |
| IG Private Ltd | Sheffield | A rating |
| IG Renewables Limited | London | A rating |
| IG4 Capital Advisors LLP | London | A rating |
| IGALAXY LTD | Huntingdon | A rating |
| IGDB LIMITED | LONDON | A rating |
| IGEM CHRIST COVENANT CHURCH | LONDON | A rating |
| iGene Entertainment Services Private Limited | London | A rating |
| iGenie Limited | Isleworth | A rating |
| Igentics | Cambridge | A rating |
| IGHK Limited T/A Ado?¢????s | Lancaster | A rating |
| IGIS Europe Limited | London | A rating |
| IGLESIA NI CRISTO (Church of Christ) | Sunbury on Thames | A rating |
| Igloo Construction and Project Management Ltd | Horley | A rating |
| IGLOO TOWN LTD | Ilford | A rating |
| Igloo Vision Ltd | Craven Arms | A rating |
| Igloo3 | Shoreham-by-sea | A rating |
| Iglu Network Ltd | London | A rating |
| Iglu Network Ltd. | London | A rating |
| Iglu.com Ltd | Portsmouth | A rating |
| IGNAS LTD | London | A rating |
| Ignis Energy UK Ltd | Liverpool | A rating |