| GSM Automotiove Ltd | Witney | A rating |
| GSM Builders Ltd | Hayes | A rating |
| GSM EXPERTS LIMITED | London | A rating |
| GSM Workshop Plus Ltd | Manchester | A rating |
| GSN IMMIGRATION LTD | HARROW | A rating |
| GSOMEGA IT SOLUTIONS LIMITED | MANCHESTER | A rating |
| GSP CONSTRUCTION (MIDLANDS) LIMITED | STOURBRIDGE | A rating |
| GSP Venues Limited | London | A rating |
| GSPJ LTD | Eastbourne | A rating |
| GSPV Limited | London | A rating |
| GSR Cardiff UK Limited T/A Premier | Porth | A rating |
| GSR Distribution Limited | Glasgow | A rating |
| GSR Forecourts Ltd | Rotherham | A rating |
| GSR Holdings Limited | London | A rating |
| GSR Resources UK Limited | Knutsford | A rating |
| GSR Services Private Limited | Birchwood | A rating |
| GSR Technology Europe Ltd. | Bracknell | A rating |
| GSR UK Productions Limited | Shepperton | A rating |
| GSS (NI) Ltd trading as PlotBox | Ballymena | A rating |
| GSS Contracts Ltd | East Kilbride | A rating |
| GSS GLOBAL SUPPLY SERVICES LTD | London | A rating |
| GSS HEALTHCARE LTD | Wolverhampton | A rating |
| GSS UK Services Limited | London | A rating |
| Gstyles Traditional Turkish Barber | MOLD | A rating |
| GSW TRANSPORT LTD T/A GRANT WELSH COMMERCIALS | GLASGOW | A rating |
| GSY Hospitality Ltd | London | A rating |
| GT Aerospace (Europe) Limited | Elstree | A rating |
| GT APPLIANCE WAREHOUSE LTD | BIRMINGHAM | A rating |
| GT Care (Wakefield) Ltd | Wakefield | A rating |
| GT Food Group Ltd | Doncaster | A rating |
| GT Gettaxi (UK) Limited | London | A rating |
| Gt Services Leicester Ltd | Leicester | A rating |
| GT Stewart Limited | London | A rating |
| GT TRANSPORT SERVICES (UK) LTD | Greenford | A rating |
| GT Wings t/a GT Green Technologies Limited | Liverpool | A rating |
| Gt Witchingham Cricket Club | Norwich | A rating |
| GT-BESTONE LIMITED | Glasgow | A rating |
| GT3 ARCHITECTS LIMITED | Newcastle Upon Tyne | A rating |
| GTA Interior | London | A rating |
| GTAC Partners Limited | Orpington | A rating |
| GTAM Shop Limited | Grays | A rating |
| GTB STORES LTD | Manchester | A rating |
| GTC BUSINESS SERVICES LIMITED | London | A rating |
| GTC Infrastructure Limited | Bury St Edmunds | A rating |
| GTC UK Real Estate Investment Ltd | London | A rating |
| GTG Civils Limited | Ilford | A rating |
| GTHR Limited | Denbigh | A rating |
| GTI Futures Limited | Wallingford | A rating |
| GTI Recruiting Solutions | London | A rating |
| GTK100 LIMITED t/a Toni Pizzeria | Glasgow | A rating |
| GTM (EUROPE) LTD | Stockport | A rating |
| GTN EUROPE FINANCIAL SERVICES LIMITED | London | A rating |
| GTN Market Data Services Ltd | London | A rating |
| GTN MOTORS LTD | SWANLEY | A rating |
| GTO ENGINEERING PARTS LIMITED | Reading | A rating |
| GTO Partners LLP | London | A rating |
| GTR Larbet Ltd t/a Gulnar Tandoori | Larbert | A rating |
| GTR Transmission and Protection Solutions Ltd | Poole | A rating |
| GTS IA UK LLP | London | A rating |
| GTS Rail Operations Limited | London | A rating |
| GTS Securities Europe Ltd | London | A rating |
| GTS Services (UK) Ltd | Ilford | A rating |
| GU Group (Go Uni) Ltd | London | A rating |
| Gu Indulgent Foods Limited | Bishop's Stortford | A rating |
| GU RESOURCE LIMITED | London | A rating |
| Guala Closures UK Ltd | Kirkintilloch | A rating |
| Guang Hua Media UK Ltd. | London | A rating |
| Guangwei Restaurant Ltd | London | A rating |
| GUANXI (UK) Ltd | Nottingham | A rating |
| Guapo Master UK Ltd | London | A rating |
| Guarantco Management Company | London | A rating |
| GUARANTEE CARE SERVICES LTD | Croydon, Surrey | A rating |
| Guaranteed Asphalt Ltd | New Cross | A rating |
| GUARANTY TRUST BANK (UK) LIMITED | LONDON | A rating |
| Guard N Watch Limited | The Quays, Salford | A rating |
| Guard Security Services LTD | London | A rating |
| GuardCap Asset Management Limited | London | A rating |
| GUARDFORCE SECURITY SERVICES LTD | WATFORD | A rating |
| Guardia Security Limited | London | A rating |
| Guardian & Company Ltd | London | A rating |
| GUARDIAN ALLIANCE HEALTH CARE SERVICES LTD | Bishop Auckland | A rating |
| Guardian Aluminium Limited | Bradford | A rating |
| Guardian and Company Ltd | London | A rating |
| Guardian Angel Carers | Chichester | A rating |
| Guardian Angel Carers Mid Sussex | Burgess Hill | A rating |
| Guardian Controls International Ltd | Arclid | A rating |
| Guardian Fall Ltd | Sheerness | A rating |
| Guardian Homecare | Preston | A rating |
| Guardian Housing Limited | Birmingham | A rating |
| Guardian Industries U.K. Limited | Goole | A rating |
| GUARDIAN JET UK LIMITED | WORCESTERSHIRE | A rating |
| Guardian Live-In Care Limited | Aberdeen | A rating |
| Guardian Metal Resources PLC | London | A rating |
| Guardian News and Media Ltd. | London | A rating |
| Guardian North West Ltd | Liverpool | A rating |
| GUARDIAN PROFESSIONAL CORPORATE SERVICES LTD | London | A rating |
| Guardian Sells Ltd | Reading | A rating |
| GUARDIAN SUPPORTED LIVING LIMITED | Birmingham | A rating |
| GUARDIANFM LTD | London | A rating |
| Guardianship Services Ltd | HARROW | A rating |
| GUARDIANSHIP SERVICES LTD | LONDON | A rating |
| GUARDING NATIONWIDE LTD | Birmingham | A rating |
| Guarding UK Ltd | Ilford | A rating |
| Guarding UK Security Services Limited | Oxford | A rating |
| GUARDING24SEVEN SERVICES LTD | Canterbury | A rating |
| GUARDON SECURITY LIMITED | Stoke-On-Trent | A rating |
| Guards On Call Ltd | London | A rating |
| Guards Polo Club Holdings Limited | Egham | A rating |
| Guardtech Cleanrooms Ltd | Haverhill | A rating |
| Guasco and Associates Ltd | Cheltenham | A rating |
| gubb inns ltd | yattendon | A rating |
| GUCINARI BASE LIMITED | London | A rating |
| Gud Ideas Marketing Ltd | Bedford | A rating |
| Gudge Heath Lane Surgery | Fareham | A rating |
| Guenther Bakeries UK Limited | Heywood | A rating |
| GUERIN ENERGY SERVICES LTD | Altrincham | A rating |
| Guest Medical Limited | Aylesford | A rating |
| Guest Motors Ltd | West Midlands | A rating |
| GuestHouse Ltd | London | A rating |
| Guestready Limited | London | A rating |
| GUESTREVU LIMITED | London | A rating |
| Guesty UK Limited | London | A rating |
| Gufran Accessories Limited | London | A rating |
| Guggenheim Investment Advisors (Europe) Limited | London | A rating |
| Guggenheim Securities International Ltd | London | A rating |
| GUGOODS LIMITED | London | A rating |
| GUHA INFOTECH LTD | London | A rating |
| Guhring Limited | Birmingham | A rating |
| Guidance Automation | Leicester | A rating |
| Guidance Marine Ltd | Leicester | A rating |
| GUIDANCE PLUS NI LTD | BELFAST | A rating |
| Guidance Technologies Limited | London | A rating |
| GUIDE POINT LTD | London | A rating |
| GUIDED EDUCATION HUB LTD | Leeds | A rating |
| Guided Technology Ltd t/a Go2Guide | Harrogate | A rating |
| Guided Ultrasonics Ltd | Brentford | A rating |
| Guidehouse Europe Limited | London | A rating |
| GUIDEMAP UK LTD | Leicester | A rating |
| Guidepoint Global UK Limited | London | A rating |
| Guidepost Solutions Ltd | LONDON | A rating |
| Guidewire Software (UK) Limited | London | A rating |
| Guidezone Limited T/A Ambassadors Bloomsbury Hotel | London | A rating |
| Guild Care | Worthing | A rating |
| GUILD ESPORTS PLC | LONDON | A rating |
| Guild Healthcare Ltd | Woodton | A rating |
| Guild Living Limited | London | A rating |
| Guild of Professional Beauty Therapists Limited | Mansfield | A rating |
| Guildauto Limited | Bathgate | A rating |
| Guildford Accounting Services Ltd | Guildford | A rating |
| Guildford Cricket Club | Guildford | A rating |
| Guildford Muffin LTD t/a Muffin Break | Guildford | A rating |
| Guildford Specsavers Hearcare Limited | Guildford | A rating |
| Guildford Sushi Ltd | Guildford | A rating |
| Guildford Visionplus Ltd | Guildford | A rating |
| Guildhall Restaurant Limited | Poole | A rating |
| Guildhall Surgery | Folkestone | A rating |
| Guildhawk Limited | London | A rating |
| Guildmore Ltd | Bromley | A rating |
| Guilford Hotel | London | A rating |
| GUILLAM LTD | London | A rating |
| Guinness Asset Management | London | A rating |
| Guinness World Records Limited | London | A rating |
| Guinot-Mary Cohr UK Limited | Ascot | A rating |
| Guisborough Pharma Ltd t/a Guisborough Pharmacy | GUISBOROUGH | A rating |
| Guisborough Specsavers Ltd | Guisborough | A rating |
| Guiseley School | Leeds | A rating |
| GUJARAT EXPRESS LTD | Harrow | A rating |
| Gujarat Hindu Society | Preston | A rating |
| GUJARATI KITCHEN (BRADFORD) LIMITED TRADING AS GUJARATI KITCHEN | BRADFORD | A rating |
| Gujarati Rasoi Limited | London | A rating |
| GUJCO INDIA LTD | Loughborough | A rating |
| Gujerati Sunni Muslim Society | Preston | A rating |
| GUJJAR ALLIANCE LTD | Bathgate | A rating |
| GUJJAR LOGISTICS SERVICE LTD | BIRMINGHAM | A rating |
| Gujjar Taxis Ltd | Keighley | A rating |
| Gujju Paaji Ltd | Wembley | A rating |
| Gujju-UK Limited T/A Banaras Paan | Harrow | A rating |
| Gujjula Consulting Limited | Welwyn Garden City | A rating |
| Gujrat Construction Limited | Manchester | A rating |
| Gul Arshad T/A Fairfield and Fold Practices | Solihull | A rating |
| GUL INSURANCE SOLUTIONS LTD | Preston | A rating |
| GUL PROPERTY MANAGEMENT LTD | Preston | A rating |
| GULBARHAR HUSSAIN T/A PUNJAB BALTI HOUSE | Peterborough | A rating |
| GULERMAK RENEWABLES LTD | London | A rating |
| Gulf Air B.S.C.(c) | Brentford | A rating |
| GULF BAHRAIN COMPANY LTD | Cheshire | A rating |
| Gulf Conferences Limited | London | A rating |
| Gulf International Bank UK Limited | London | A rating |
| Gulf Marine Services (UK) Limited | Aberdeen | A rating |
| GULF PLASTICS LIMITED | Bolton | A rating |
| GULF PROJECT SOLUTIONS LTD | Manchester | A rating |
| GULF SALON LTD | London | A rating |
| GULF TALENT (UK) LTD | LONDON | A rating |
| Gulfstream Aerospace Ltd | Farnborough | A rating |
| Gulfstream Falcons Dubai Limited | Spalding | A rating |
| GULKARI STYLES LTD | Birmingham | A rating |
| Gull Enterprises Limited | London | A rating |
| Gull Law Chambers Limited | Hounslow | A rating |
| Gulliver's Kingdom Ltd | Matlock | A rating |
| Gully Point Limited | Chelmsford | A rating |