| INTERNATIONAL TELEVISION CHANNEL EUROPE LIMITED T/A NTV | LONDON | A rating |
| International Tennis Integrity Agency | London | A rating |
| International Testing & Training Services Ltd | Manchester | A rating |
| International Tin Association Ltd | St Albans | A rating |
| International Transport Workers' Federation (ITF) | London | A rating |
| International Tubular Services Limited | Aberdeen | A rating |
| International Union of Crystallography | Chester | A rating |
| INTERNATIONAL VAPE JUICE LTD | LONDON | A rating |
| International Vegetables Ltd | London | A rating |
| International Village Education Ltd | Gloucester | A rating |
| International Voluntary Service (IVS GB) | Edinburgh | A rating |
| International Water Association | London | A rating |
| International Water Solutions | Redditch | A rating |
| International Whaling Commission | Cambridge | A rating |
| International Wildlife Consultants (UK) Ltd | Carmarthen | A rating |
| International Workplace | Norfolk | A rating |
| Internations Legal LLP | London | A rating |
| Internet Consultants and Associates Ltd | Southampton | A rating |
| Internet Matters Limited | London | A rating |
| Internet Query Marketing Ltd | Essex | A rating |
| Internet Securities Limited | London | A rating |
| Interneuron CIC | Cambridge | A rating |
| Internews Europe | London | A rating |
| InternMatch UK | London | A rating |
| Internorm Windows UK Limited | London | A rating |
| Interocean Marine Services Ltd | Aberdeen | A rating |
| Interocean Personnel Services UK Limited | Cleveland | A rating |
| Interogo Global Private Equity Advisors Ltd | London | A rating |
| INTEROP.IO UK LIMITED | London | A rating |
| Interopa Holidays | London | A rating |
| Interoperability Health UK T/A Lyniate | Lewins Mead, Bristol | A rating |
| Interpack UK Limited | London | UK Expansion Worker: Provisional |
| Interpart (U.K.) Limited | Manchester | A rating |
| Interpath Limited | London | A rating |
| Interpid Care & Support Limited | Kettering | A rating |
| Interplas Recycling Limited | Camberley | A rating |
| Interprint Documents Limited | Knaresborough | A rating |
| Interpub Plc | London | A rating |
| Interpublic GIS UK Ltd | London | A rating |
| Interpublic Group | London | A rating |
| Interpublic Limited | London | A rating |
| Interquest Group (UK) Limited | Berkhamsted | A rating |
| INTERROBANG LIMITED | London | A rating |
| Interrupt Labs Ltd | Basingstoke | A rating |
| Intersoft Systems & Programming Ltd | Egham | A rating |
| Interspan Europe Limited | Shepperton | A rating |
| Interstate Creative Partners Limited | London | A rating |
| Interstate United Kingdom Management Ltd | Glasgow | A rating |
| Interstuhl Ltd | London | A rating |
| Intersurgical Ltd | Wokingham | A rating |
| Intersystems | Windsor | A rating |
| intertax consulting limited | london | A rating |
| Intertek Group plc | London | A rating |
| Intertoll Limited | Maidstone | A rating |
| Interweld Nuclear Services Ltd | PONTYPRIDD | A rating |
| Interwell Limited | Aberdeen | A rating |
| InterWorks Europe Limited | Christchurch | A rating |
| Intesa Sanpaolo SpA London Branch | London | A rating |
| Inteum International Ltd | Edinburgh | A rating |
| Intex Solutions Europe Limited | London | A rating |
| Intexco Design Ltd | Romford | A rating |
| Intimacy in Arts Ltd | GLASGOW | A rating |
| Intimate Apparel Retail UK Limited | Leicester | A rating |
| Intix Ticketing Limited T/A Intix | London | A rating |
| Into Care Limited | Milton Keynes | A rating |
| INTO MOVIT LTD | Bradford | A rating |
| Into the Blue Ltd | Cowes | A rating |
| Intobeige Ltd | Elgin | A rating |
| Intoku Holdings Ltd | Windsor | A rating |
| INTOLIVE LTD | London | A rating |
| INTRA MEDIKAL LTD | London | A rating |
| INTRA PRIVATE FINANCE LTD | London | A rating |
| IntraBio Ltd | London | A rating |
| Intrad Group Ltd | Bolton | A rating |
| Intrade Consultant UK Limited | London | A rating |
| Intradiem UK Limited | Bristol | A rating |
| Intrado Solutions Limited | Gloucester | A rating |
| Intraedge Limited | Solihull | A rating |
| Intragen Limited | Chelmsford | A rating |
| Intrahealth Liimited | Peterlee | A rating |
| Intralink Limited | Abingdon | A rating |
| Intralinks Ltd | London | A rating |
| INTRAROW LIMITED | Cambridgeshire | A rating |
| INTRASAVE LIMITED | LONGRIDGE | A rating |
| Intrasonics Limited | Cambridge | A rating |
| Intratone UK Ltd | London | A rating |
| Intreface Ltd | Doncaster | A rating |
| Intrepid Ant Ltd | Oxford | A rating |
| Intrepid Control Systems Ltd | Nuneaton | A rating |
| Intrepid Corporation LTD | London | A rating |
| Intrepid Growth Partners (UK) LLP | LONDON | A rating |
| Intrepid London Limited | London | A rating |
| Intrepid Ltd | London | A rating |
| Intrepid Minds Limited | Nuneaton | A rating |
| Intrepid Owls Ltd | Colchester | A rating |
| Intrepid Travel Group UK Ltd | Brixton | A rating |
| INTRINSIC FINANCIAL LTD | WOLVERHAMPTON | A rating |
| Intrinsic Group Limited | Allendale | A rating |
| Intrinsic Semiconductor Technologies Limited | Brill | A rating |
| Intriva Services Limited | London | A rating |
| Intrix systems Limited | Rickmansworth | A rating |
| Introba Consulting Limited | London | A rating |
| Introe Limited | London | A rating |
| Introhive UK Limited | London | A rating |
| Intropic Limited | London | A rating |
| Intropy AI Ltd | London | A rating |
| Introworld Technology Limited | London | A rating |
| Intruder Systems Ltd | London | A rating |
| Intrum UK Limited | Reigate | A rating |
| Intrust Care Ltd | Milton Keynes | A rating |
| Intryc Limited | London | A rating |
| INTS SOLUTIONS LIMITED | Hemel Hempstead | A rating |
| Intsol Recruitment | London | A rating |
| Intu Interiors | KIDDERMINSTER | A rating |
| INTUBATION STUDIO LTD | London | A rating |
| INTUIT ED LTD | Ilford | A rating |
| Intuit Limited | London | A rating |
| Intuition IT Solutions Limited | London | A rating |
| Intuitive Business Intelligence Limited | Leeds | A rating |
| Intuitive Engineering Solutions Ltd | ALTRINCHAM | A rating |
| Intuitive Surgical Limited | WOKINGHAM | A rating |
| Intumescent Systems Limited | Dover | A rating |
| Intune Healthcare Limited | Peacehaven | A rating |
| INTURI CONSULTING LTD | Hounslow | A rating |
| Inturn Trading Limited | Wymondham | A rating |
| INURFACE MEDIA LTD | London | A rating |
| INUVI HEALTH LIMITED | Wokingham | A rating |
| Invacare UK Ltd | BRIDGEND | A rating |
| Invade International Ltd | Bristol | A rating |
| Invasix UK Limited | London | A rating |
| Invasystems UK Ltd | Warrington | A rating |
| INVATE SOLUTIONS LTD | ESSEX | A rating |
| Invenics Services Ltd | London | A rating |
| Invenio Business Solutions Ltd | Wokingham | A rating |
| Invenirex LTD | Newcastle Upon Tyne | A rating |
| Invennt Limited | LONDON | A rating |
| Invensys Pension Trustee Ltd | London | A rating |
| Invent Design Build Ltd | East Kildbride | A rating |
| Invent Partners Limited | York | A rating |
| Inventive Technologies Limited | Basingstoke | A rating |
| Inventor-e Limited | Solihull | A rating |
| Inventors Tech Ltd | Birmingham | A rating |
| Inventronics UK Ltd | Green Park | A rating |
| InVentry Ltd | Leeds | A rating |
| INVENTUR WARRENS TREET LTD | LONDON | A rating |
| INVENTURE ASHTON LTD T/A ASM CASH & CARRY | Ashton-under-lyne, | A rating |
| Inventure Birmingham Ltd T/A Bangla Bazar | Birmingham | A rating |
| Inventure Camden Ltd T/As Fresh Food and Wine | London | A rating |
| Inventure Coventry Ltd T/A Opus foods | Coventry | A rating |
| Inventure Kensington Ltd T/A Dhaliwal Supermarket | Coventry | A rating |
| INVENTURE PUTNEY LTD T/A BEST ONE | LONDON | A rating |
| Inventure Retail Ltd | London | A rating |
| Inventure Soho Ltd T/As Dodo Supermarket | London | A rating |
| Inventure Soho Road Ltd T/A S&D Supermarket | Birmingham | A rating |
| Inventure Warwick Road Ltd | Birmingham | A rating |
| Inventure Wholesale Ltd | Coventry | A rating |
| Inventus Group Limited | Birmingham | A rating |
| Inventya Ltd | Warrington | A rating |
| INVEON DIGITAL COMMERCE SOLUTIONS LTD | Buckinghamshire | A rating |
| Inver House Distillers Limited | Lanarkshire | A rating |
| Inver Restaurant | Cairndow | A rating |
| Inver Surgery | Larne | A rating |
| Invercare limited | Greenock | A rating |
| Inverclyde Physiotherapy Ltd | Greenock | A rating |
| Inverhome Ltd | Alfreton | A rating |
| Inverhow ltd | Edinburgh | A rating |
| Inverid Limited | Warwick | A rating |
| Inverlochy Castle Hotel | Fort William | A rating |
| Inverlochy Castle Limited | Fort William | A rating |
| Inverlochy Castle Management International Ltd | Fort William | A rating |
| INVERNESS BUSINESS LTD | Banchory | A rating |
| Inverness Caledonian Thistle Football Club | Inverness | A rating |
| INVERNESS MASJID ASSOCIATION | INVERNESS | A rating |
| INVERNESS PAVING LTD | Inverness | A rating |
| Inverness Visionplus Ltd | Inverness | A rating |
| INVERROY CRISIS MANAGEMENT LIMITED | Edinburgh | A rating |
| Inverse Lighting Design Ltd | London | A rating |
| Inversity LTD | London | A rating |
| Inverskilavulin Estate | Fort William | A rating |
| Inverted:Circus and Pole Fitness Limited | Aberdeen | A rating |
| Invertek Drives Limited | Welshpool | A rating |
| Inverter Drive Repair Limited | Aldershot | A rating |
| Inverto UK Ltd | London | A rating |
| Inverurie Specsavers Limited | Inverurie | A rating |
| Invesco UK Limited | London | A rating |
| Invesis UK Limited | London | A rating |
| Invest Asset Management Ltd | London | A rating |
| Invest In Care Ltd | Shrewsbury | A rating |
| INVEST MULTILET & PPB LTD | Leeds | A rating |
| Investa Markets Ltd | Temple | A rating |
| Investaste Limited | Worcester | A rating |
| INVESTAT HOLDING LIMITED | London | A rating |
| Investcloud Limited | London | A rating |
| Investcorp International Ltd | London | A rating |
| Investec Bank PLC | London | A rating |
| Investement Software Limited | London | A rating |
| INVESTENGINE (UK) LIMITED | LONDON | A rating |
| Investgrow Financial Services Ltd | Sutton Coldfield | A rating |
| Investigo Limited | London | A rating |
| Investindustrial Advisors Limited | London | A rating |