| Global Shipping Master UK Limited | Heston | A rating |
| Global Shop Solutions (UK) Limited | Brighton | A rating |
| Global Stone (Colchester) Ltd | Colchester | A rating |
| Global Substation Solutions Limited | Tyne and Wear | A rating |
| Global Technologies International Limited | Glasgow | A rating |
| Global Travel Collection UK Limited | London | A rating |
| Global Tunnelling Experts Limited | Bristol | A rating |
| Global Wind Service (UK) Ltd. | Lowestoft | A rating |
| Globality UK Limited | London | A rating |
| GlobalLogic Corp. UK Ltd | Edinburgh | A rating |
| GlobalLogic UK | London | A rating |
| Globant UK Limited | London | A rating |
| Globe Air Motors & High Pressure Equipment Ltd | Brentwood | A rating |
| GlobeInvestUK Limited | London | A rating |
| Globeleq Africa Investments Limited | London | A rating |
| Globetek Engineering Ltd. | London | A rating |
| Globo International (London) Limited | London | A rating |
| Globoforce UK Limited | West Wickham | A rating |
| Glory Global Solutions (International) Limited | Basingstoke | A rating |
| Glory Technology Development UK Ltd | London | A rating |
| GM Speciality Vehicles UK Limited | Leamington Spa | A rating |
| GMO GlobalSign Limited | Maidstone | A rating |
| GMO UK Limited | London | A rating |
| GMV NSL Limited | Nottingham | A rating |
| GN AUDIO UK Limited | Langley | A rating |
| GN Hearing UK LTD | Bicester | A rating |
| GNT UK Ltd | Derby | A rating |
| Go City Limited | London | A rating |
| Go Daddy Europe Limited | Nottingham | A rating |
| GO TRAVELLING LIMITED | LONDON | A rating |
| Go Up Ltd. | London | A rating |
| Gobrands UK Holdings Ltd | London | A rating |
| GoCardless Limited | London | A rating |
| Godel Technologies Europe Ltd | Manchester | A rating |
| Godesic Limited T/A Cutover | London | A rating |
| Godiva UK Ltd | London | A rating |
| Goethe-Institut London | London | A rating |
| GoHenry Limited | Farnborough | A rating |
| Golar Management Limited | London | A rating |
| Goldbeck Construction Ltd | Birmingham | A rating |
| Goldbeck Solar Limited | Birmingham | A rating |
| Goldcrest Post Production Facilities Limited | London | A rating |
| Golden Empire Development UK Limited | London, | A rating |
| Golden Goose DB UK Ltd | London | A rating |
| GOLDEN PARK LIMITED | London | A rating |
| Golden Wolf Limited | London | A rating |
| GoldenSource LLC | London | A rating |
| GoldenTree Asset Management UK Service Co. Ltd. | London | A rating |
| Golder Associates (UK) Ltd | Nottinghamshire | A rating |
| Goldman Sachs (UK) SVC. Limited | London | A rating |
| Goldman Sachs International | London | A rating |
| Golf Genius UK Limited | Keighley | A rating |
| Gomez-Acebo & Pombo Abogados SL | London | A rating |
| Gong Cha Global Limited | London | A rating |
| GOOD METHODS UK LIMITED | Reading | A rating |
| Goodfellow Cambridge Limited | Huntingdon | A rating |
| Goodman Masson Ltd | London | A rating |
| Goodman UK Limited | London | A rating |
| GOODMAYSYS SOFTWARE TECHNOLOGIES LIMITED | Ilford | A rating |
| Goodrich Controls Holding Limited | Solihull | A rating |
| GOODWIN PLC | STOKE-ON-TRENT | A rating |
| Goodwin Procter (UK) LLP | London | A rating |
| Goodyear Tyres UK Limited | Birmingham | A rating |
| Google (UK) Limited | London | A (Premium) |
| Gorilla Glue Europe Limited | Chorley | A rating |
| GoTo Technologies UK Limited | London | A rating |
| Governance House for Consulting Training and Development Limited | London | A rating |
| Gowan Crop Protection Limited | Harpdenden | A rating |
| Gowling WLG (UK) LLP | Birmingham | A rating |
| Gowrie Laxmico Ltd T/A B&S Healthcare | Ruislip | A rating |
| Gozney Group Ltd | Bournemouth | A rating |
| GP ACOUSTICS (UK) LIMITED | IPSWICH | A rating |
| GP BULLHOUND CORPORATE FINANCE LTD | LONDON | A rating |
| GP Fund Solutions UK Ltd | Brighton | A rating |
| Grace Foods UK Limited | Welwyn Garden City | A rating |
| Graduate Management Global Connection UK Limited | London | A rating |
| Graebel UK Centre Limited | London | A rating |
| Grafana Labs Ltd | London | A rating |
| Graff Diamonds Limited | London | A rating |
| Graham Capital LLP | London | A rating |
| Grail Bio UK Limited | London | A rating |
| GrainCorp Europe (UK) Ltd | Swaffham | A rating |
| GRAINGER GLOBAL ONLINE BUSINESS LTD. | London | A rating |
| Gram Games Limited | London | A rating |
| GRAND PLAZA KENSINGTON LIMITED | London | A rating |
| Grand View Container Trading (UK) Limited | Amersham | A rating |
| Grange Fencing Ltd | Telford | A rating |
| GRANSOLAR CONSTRUCTION UK LIMITED | Leeds | A rating |
| Grant Thornton Services LLP | London | A rating |
| Granville Oil & Chemicals Ltd | Rotherham | A rating |
| Graphcore Limited | Bristol | A rating |
| Graphic Packaging International Europe UK Limited | Leeds | A rating |
| Gravitee Topco Limited | London | A rating |
| Gravity Media (UK.) Ltd | Watford | A rating |
| Great Eagle Hotels (UK) Ltd, t/a The Langham, London | London | A rating |
| Great Hill Partners UK LLP | London | A rating |
| Great Sogni Ltd | London | A rating |
| GreCon Limited | Blaydon | A rating |
| Green Generation Solutions UK Limited | London | A rating |
| Green Giraffe (GGEB) UK Limited | London | A rating |
| GREEN MOUNTAIN DC UK LIMITED | Linford Wood | A rating |
| GREEN SPRING (UK) LIMITED | LONDON | A rating |
| Green Street Advisors (UK) Limited | London | A rating |
| Green Team Christmas Trees Limited | Inverurie | A rating |
| Greenberg Traurig, LLP | London | A rating |
| Greenhill & Co. International LLP | London | A rating |
| Greenland (United Kingdom) Investment Ltd | London | A rating |
| GREENLY UK LTD | London | A rating |
| Greenpeace Limited | London | A rating |
| Greens Combustion Limited | Poole | A rating |
| GreenScale Data Centres Limited | London | A rating |
| Greensolver UK Limited | London | A rating |
| GREENVOLT ENERGIAS RENOVAVEIS HOLDCO LIMITED | NORWICH | A rating |
| Greenwich Food Ingredients Ltd | Talbot Green | A rating |
| Gregory Park Holding Ltd Trading as Four Seasons Hotel Hampshire | Dogmersfield | A rating |
| Grenergy Renewables UK Limited | London | A rating |
| Grey Advertising Limited | London | A rating |
| Grey Communications Group Limited | London | A rating |
| Greystar Europe Holdings Ltd | London | A rating |
| GRF Services Limited | London | A rating |
| GRID DYNAMICS UK LTD | London | A rating |
| Grifols UK Limited | London | A rating |
| Grimshaw Services Limited | London | A rating |
| Grindstone Capital Limited | Malvern | A rating |
| Grissan Renewable Energy Limited | London | A rating |
| GRO Capital International Limited | London | A rating |
| Grob Machine Tools UK Ltd | Stratford-upon-Avon | A rating |
| Grocery Delivery E-services UK Ltd | London | A rating |
| Grohe Ltd | Hounslow | A rating |
| Grosvenor Estate Management Ltd | London | A rating |
| Group RMC Management UK Limited | London | A rating |
| Groupe SEB UK Ltd | Slough | A rating |
| Grove Information Systems Ltd. | Newcastle Upon Tyne | A rating |
| GrowthPoint Technology Partners UK Ltd | London | A rating |
| Grundfos Pumps Limited | Bedfordshire | A rating |
| Grunenthal Ltd | Maidenhead | A rating |
| Grupo Antolin UK Limited | Warwick | A rating |
| Grupotec Design and Build Limited | London | A rating |
| Grupotec Renewables Limited | London | A rating |
| GRUPPO CADORO LIMITED | LONDON | A rating |
| GS Caltex Singapore Pte Ltd | London | A rating |
| GS Capital Partners UK LLP | London | A rating |
| GS Engineering & Construction Corp. London | London | A rating |
| GS REAL ESTATE DEVELOPMENT COMPANY LONDON LTD | LONDON | A rating |
| GS Yuasa Battery Europe Ltd | Swindon | A rating |
| GSA Capital Services Limited | London | A rating |
| GSA INVESTMENT MANAGEMENT UK LIMITED | LONDON | A rating |
| GSK Plc | London | A rating |
| GSM Association | London | A rating |
| GT Aerospace (Europe) Limited | Elstree | A rating |
| GTS Securities Europe Ltd | London | A rating |
| GUARANTY TRUST BANK (UK) LIMITED | LONDON | A rating |
| Guardian Industries U.K. Limited | Goole | A rating |
| Guardian News and Media Ltd. | London | A rating |
| Guenther Bakeries UK Limited | Heywood | A rating |
| Guest Medical Limited | Aylesford | A rating |
| Guestready Limited | London | A rating |
| Guggenheim Investment Advisors (Europe) Limited | London | A rating |
| Guggenheim Securities International Ltd | London | A rating |
| Guhring Limited | Birmingham | A rating |
| Guidance Automation | Leicester | A rating |
| Guidehouse Europe Limited | London | A rating |
| Guidepoint Global UK Limited | London | A rating |
| Guidepost Solutions Ltd | LONDON | A rating |
| Guidewire Software (UK) Limited | London | A rating |
| GULF BAHRAIN COMPANY LTD | Cheshire | A rating |
| Gulf International Bank UK Limited | London | A rating |
| GULF TALENT (UK) LTD | LONDON | A rating |
| Gulfstream Aerospace Ltd | Farnborough | A rating |
| Gulmay Ltd | West Byfleet | A rating |
| Gumtree.com Limited | Richmond Upon Thames | A rating |
| Gunvor UK Limited | London | A rating |
| GUOTAI HAITONG SECURITIES (UK) LIMITED | LONDON | A rating |
| Gurit UK Ltd | Newport | A rating |
| GURR JOHNS LIMITED | LONDON | A rating |
| Gutteridge Haskins and Davey Limited | London | A rating |
| GV UK Management Company, Limited | London | A rating |
| Gympass UK Limited | London | A rating |
| Gymshark Ltd | Solihull | A rating |
| Gyrus Medical Limited | Cardiff | A rating |
| GYXIS CORPORATION | London | A rating |
| H & M Hennes & Mauritz UK Ltd | London | A rating |
| H Dawson Sons and Company (Wool) Ltd | Shipley | A rating |
| H J Heinz Co Ltd | London | A rating |
| H L Hall (International) Ltd | Tonbridge | A rating |
| H.I.G. Capital International Advisors LLP | London | A rating |
| H.I.G. European Capital Partners LLP | London | A rating |
| H.J. Langdon & Co (UK) Limited | London | A rating |
| H.W. Wood Limited | London | A rating |
| H/2 Credit Manager UK LLP | London | A rating |
| H&E Engineering Limited | Bridgwater | A rating |
| H&F Europe Limited | Birmingham | A rating |
| H&K Equipment Limited | Rugby | A rating |
| H&MV Engineering Services Ltd | Altrincham | A rating |
| H&P Facilities Ltd | London | A rating |
| H4B London Limited | London | A rating |
| HABIB BANK AG ZURICH | LONDON | A rating |
| Habitat Learn Limited | Woking | A rating |
| Hach Lange Ltd | Salford | A rating |
| Hachette UK (Holdings) Limited | London | A rating |