| I N Fabrication Ltd | Mansfield | A rating |
| I -Exceed Technology Solutions Limited | Halesowen | A rating |
| I & C Ltd t/a Red7Marine | Ipswich | A rating |
| I & A (UK) Ltd T/A Subway (Trading address)) | DERBY | A rating |
| I & A Dundee Ltd t/a 1st Stop 2 Shop | Dundee | A rating |
| I & A Fashions Limited | London | A rating |
| I & A MOTORS LTD T/A Car Fixers | Dagenham | A rating |
| I & A Realco Ltd | London | A rating |
| I & H Sumra Ltd t/a West End Tandoori | Southampton | A rating |
| I & J Limited | Reading | A rating |
| I & J SONS TRANSPORT LTD | WALSALL | A rating |
| I & M Corporates Limited T/A Cover n Style | Datford | A rating |
| I & M Plumbing Limited | London | A rating |
| I & N Sekhon Limited | Pudsey | A rating |
| I & P Buchanan Limited | Dungiven | A rating |
| I & S CHILDCARE LTD | London | A rating |
| I A & C MACIVER LTD | STORNOWAY | A rating |
| I Am Cares Ltd | Kent | A rating |
| I am Doner | Bootle | A rating |
| I AM THE HOGAN LIMITED | London | A rating |
| I BROWZZ LTD | Manchester | A rating |
| I CAN Charity (Operating as Speech and Language UK) | London | A rating |
| I Care (GB) Limited | Blackpool | A rating |
| i care Nottingham LTD | Nottingham | A rating |
| I Care Service Norfolk Ltd | DEREHAM | A rating |
| I D Design Limited | Slough | A rating |
| I D P ENGINEERING CONSULTANCY UK LTD | Birmingham | A rating |
| I D S Ltd | Newcastle under Lyme | A rating |
| I Direct Independent Living Limited | Ferndown | A rating |
| I EMPIRE LTD | London | A rating |
| I ENHANCE LTD | Hayes | A rating |
| I fix LCD Limited | Brighton | A rating |
| I Fix Tel Ltd | London | A rating |
| I for Investing Limited | London | A rating |
| I Fry A&P Ltd | Newcastle Upon Tyne | A rating |
| I G ARENA LTD | ILFORD | A rating |
| I Grunwerg Ltd | CHESTERFIELD | A rating |
| I H Foods Limited | Southall, Middlesex | A rating |
| I HUB TRADING LIMITED | CLEVEDON | A rating |
| I K FAST FOOD LTD | London | A rating |
| I Levitan Services Limited | Romford | A rating |
| I Like Food Ltd T/A Cube Desserts | Bolton | A rating |
| I Love Coffee Roasting UK Ltd | Bourne End | A rating |
| I Love Dust Ltd | Portsmouth | A rating |
| I LOVE FOOD | BERKHAMSTED | A rating |
| I M DEN LIMITED | Glasgow | A rating |
| I M KELLY R & A LTD | Coventry | A rating |
| I M SMILE LTD | FROME | A rating |
| I MAINTAIN BUILDERS LTD | LONDON | A rating |
| I Motor Cars Limited t/a Nigel Langs Garage | Bolton | A rating |
| I N Sheds Ltd | Welford | A rating |
| I Need An Expert Limited | Ashby De La Zouch | A rating |
| I P D C LIMITED T/A IMAGE PROFESSIONAL DRY CLEANERS | East Molesey | A rating |
| I P S TERRONI INSURANCE SERVICES LTD | LONDON | A rating |
| I PASSING SMILES LIMITED | GLASGOW | A rating |
| I Q Trading Limited | Wembley | A rating |
| I R FOODS LTD t/a Mirchi Indian Cuisine | Peterhead | A rating |
| I REPAIR SERVICE CENTRE LTD | Cirencester | A rating |
| I S BUILD LIMITED | NOTTINGHAM | A rating |
| I S SOLAR LTD | Wembley | A rating |
| I Solution Technology Ltd | London | A rating |
| I Squared Capital Advisors (UK) LLP | London | A rating |
| I stools limited | Wakefield | A rating |
| I Teach Wales Limited | Cardiff | A rating |
| I Tech Accessories LTD | Bishop Stortford | A rating |
| I Technical Care | London | A rating |
| i transport and logistics ltd | london | A rating |
| I WISER SOLUTION LTD | London | A rating |
| I- Shine Dry Cleaner Limited | London | A rating |
| I-AM Associates Limited | London | A rating |
| i-Bitz Solutions Limited | London | A rating |
| I-care Reliability UK Limited | St Albans | A rating |
| I-CHAI BISHOPBRIGGS LTD | London | A rating |
| I-COM | Manchester | A rating |
| I-Connect Utilities & Renewables Limited | TIPTON | A rating |
| I-Cost Ltd | Hatfield | A rating |
| I-DEEP LIMITED | London | A rating |
| i-Flow Autotec Ltd | Birmingham | A rating |
| I-Link Solutions UK Limited | Bolton | A rating |
| i-media advertising Limited | London | A rating |
| I-Net Software Solutions | Hounslow | A rating |
| i-Pharm Consulting Limited | London | A rating |
| I-PO Depar ltd | Oxford | A rating |
| I-Pulse Services UK Limited | London | A rating |
| I-SHOPY LIMITED | Ilford | A rating |
| I-Smile Clinic Ltd | Aberdeen | A rating |
| I-SWARM DECISIONS LIMITED | Epsom | A rating |
| I-Systems Ltd | Quedgeley | A rating |
| I-TECH BUSINESS GROUP UK LTD | London | A rating |
| I-TELERAD UK Limited | London | A rating |
| i-Wonder Aggregator Services Ltd | Winchester | A rating |
| I.A AUTO REPAIRS LTD | Bradford | A rating |
| I.C.S. (NORTHERN) LIMITED | DEWSBURY | A rating |
| I.C.S. (UK) Limited | Bradford | A rating |
| I.D.T.-Systems Ltd | FARNHAM | A rating |
| I.Denticle LTD | London | A rating |
| I.E. BARMANIA'S DENTAL SURGERY / PRACTICE | LONDON | A rating |
| I.F. CONCEPT LTD | London | A rating |
| I.F.P. Forest and Paper Products (UK) Limited | Newbury | A rating |
| I.T Transport Limited | West Midlands | A rating |
| I.T. Alliance | Belfast | A rating |
| I.T. Associates Ltd. | London | A rating |
| I.T. Dev Limited | Southampton | A rating |
| I.T. Nowhere (UK) Limited | London | A rating |
| I.T.A Tax Accounting | London | A rating |
| I.V Care Ltd | Reading | A rating |
| I've Been Found Ltd. | London | A rating |
| I&A TRANSPOT LTD | Manchester | A rating |
| I&E Food & Wine Ltd | London | A rating |
| I&I ENTERPRISES LTD | Birmingham | A rating |
| I&J Drinks LTD | Louth | A rating |
| I&L Biosystems UK LTD | Woking | A rating |
| I&R Enterprises Limited | Derbyshire | A rating |
| I&S Construction Limited | Dartford | A rating |
| I&S GLOBAL LTD | BIRMINGHAM | A rating |
| I&S TRANSPORT LTD | Stockport | A rating |
| I&T SERVICES LIMITED | London | A rating |
| I&Y STYLE LIMITED | Hull | A rating |
| I2Global Ltd | Oldham | A rating |
| i3 Simulations Limited | Luton | A rating |
| I3A SOLUTIONS LIMITED | Latimer, Chesham | A rating |
| i3d robotics limited (Operational Office) | Tonbridge | A rating |
| I3I LIMITED | Lichfield | A rating |
| i3ntegrate | Cambridge | A rating |
| I3PT Certification Association (UK) Limited | London | A rating |
| i4 Product Design Ltd | Edinburgh | A rating |
| I5 SOFT SOLUTIONS EUROPE LIMITED | Manchester | A rating |
| I6 Media LTD | Sunderland | A rating |
| i6 Systems Limited | Farnborough | A rating |
| IA Accountancy Limited | Beckenham | A rating |
| IA Aesthetics UK | Wolverhampton | A rating |
| IA COMPUTERS & SERVICES LIMITED | Dagenham | A rating |
| IA Consultancy Services Ltd | Slough | A rating |
| IA CONSULTANT SERVICES LTD | Barking | A rating |
| IA Global Capital Limited | London | A rating |
| IA HARRIS & SON LIMITED | London | A rating |
| IA PIZZA (DERBY) LIMITED | Derby | A rating |
| IA RESTAURANTS LTD t/a Subway | Strathaven | A rating |
| IA U.K. | LONDON | A rating |
| IAA INTERIOR DESIGN AND LANDSCAPING SERVICES LTD | Coventry | A rating |
| IAAAS Ltd. | London | A rating |
| IAC Accountants Limited | Slough | A rating |
| IAC ONE LTD | Leicester | A rating |
| IACADEMY INTERNATIONAL LTD | Reading | A rating |
| IAE Global UK and Europe Ltd | London | A rating |
| IAG Limited | Huntingdon | A rating |
| IAG UK & EUROPE | SWANSEA | A rating |
| IAGTO Ltd | Borehamwood | A rating |
| IAH Electronic Industries Ltd. | Birmingham | A rating |
| Iain McKenzie EP Ltd | Ascot | A rating |
| IAM Capital Group LTD | London | A rating |
| IAM Finance Limited | Watford | A rating |
| IAM TECH LIMITED | ESSEX | A rating |
| IAM Technology Group Limited | Huddersfield | A rating |
| IAME Ltd | London | A rating |
| IAMPHD LIMITED | Nottingham | A rating |
| IAN BARRETT ROOFING LTD | Fife | A rating |
| Ian Forbes Architect Limited | South Queensferry | A rating |
| Ian Howard Schoolwear (2015) | London | A rating |
| Ian Morton Ltd | West Hill | A rating |
| Ian Tappin t/a Lovat House Residential Care Home | Wokingham | A rating |
| Ian Williams Racing Ltd | Birmingham | A rating |
| IANS Solicitors Ltd | London | A rating |
| IAP (UK) SUB LIMITED T/A Insurance Advisory Partners | London | A rating |
| IAS GROUP HOLDINGS LIMITED | Coventry | A rating |
| iAspire Care Services | Harrow | A rating |
| IASSIST NI | Belfast | A rating |
| IB & S Ltd T/A Ravello | Bradford on Avon | A rating |
| IB BARBER COULSDON LTD | Coulsdon | A rating |
| IB PROPERTY COMMERCIAL INVESTMENT UK LTD | Hertfordshire | A rating |
| ib vogt UK Ltd | London | A rating |
| IBA ADVERTISING UK LIMITED | Manchester | A rating |
| IBA Group Ltd | Leatherhead | A rating |
| iBanFirst Limited | London | A rating |
| iBanFirst Ltd | London | A rating |
| IBASE SOFTWARE SOLUTIONS PVT LIMITED | Cheshire | A rating |
| iBasis Europe Limited | London | A rating |
| Ibbu Kart Ltd | Newcastle Upon Tyne | A rating |
| IBBY BUILDERS LTD | OLDHAM | A rating |
| IBBY Restaurant Ltd | Glasgow | A rating |
| IBC QUALITY SOLUTIONS LIMITED | Mill Hill | A rating |
| IBC TV Ltd. | Hmamersmith | A rating |
| IBC Vehicles Limited | Luton | A rating |
| IBCOS COMPUTERS LTD | Poole | A rating |
| IBCP Group LTD | Twickenham | A rating |
| IBD SOLUTIONS LTD | Portsmouth | A rating |
| Ibeens Cafe Limited | London | A rating |
| IBERIA Georgian Restaurant | London | A rating |
| IBERIA LINEAS AEREAS DE ESPANA SA OPERADORA | HARMONDSWORTH, WEST DRAYTON | A rating |
| IBERICA DE COMPRAS CORPORATIVAS SL | MILTON KEYNES | A rating |
| IBEX PLUS PARTNERS LIMITED | DOWNPATRICK | A rating |
| Ibex Retail Investments Limited | London | A rating |
| Ibex Shuttle Ltd | Cardiff | A rating |
| Ibex Workwear Ltd t/a ibexworkwear.co.uk | Tamworth | A rating |
| Ibijoke Children Foundation UK | Liverpool | A rating |
| Ibil Aesthetic & Training Academy Ltd | Greenwich | A rating |
| IBIS & Partners Ltd | Peterlee | A rating |
| IBIS Capital Ltd | London | A rating |
| IBIS FURNITURE & CARPETS LTD | Reading | A rating |
| IBIS Integrated Bindery Systems Ltd | High Wycombe | A rating |