| GCL Concreting Limited | Wolverhampton | A rating |
| GCM Investments UK LLP | London | A rating |
| GCP Applied Technologies (UK) Limited | Slough | A rating |
| GCP CONSORTIUM LTD | London | A rating |
| GCP INVESTMENT MANAGEMENT (UK) LTD | London | A rating |
| GCP(UK) LIMITED | Wembley | A rating |
| GCS Compliance Services Europe Unlimited Company trading as NAVEX Global | Hammersmith | A rating |
| GCS Private Limited | Newcastle Upon Tyne | A rating |
| GCTEA Limited | Manchester | A rating |
| GCU (UK) Limited | Derry | A rating |
| GCW Global Customised Wealth LLP | London | A rating |
| GD Auto Services | KELSO | A rating |
| GD FASHION LIMITED | Heywood | A rating |
| GD SMARTWAY LIMITED | Cambridge | A rating |
| GD TRAVEL LTD | Stockport | A rating |
| GD UK Healthcare Limited | London | A rating |
| GD&P CONSTRUCTION SERVICES LTD | KENT | A rating |
| GDAV & CO LTD T/A Papa Johns Ltd | Bracknell | A rating |
| GDB Healthcare Services Company Limited | Hatfield | A rating |
| GDC UKGB Limited | Richmond | A rating |
| GDG TECHNOLOGIES LTD | London | A rating |
| GDGUK LIMITED | Chelmsford | A rating |
| GDI Norfolk UK Limited | London | A rating |
| GDIT LIMITED | London | A rating |
| GDK 2 Limited | West Bromwich | A rating |
| GDK ILFORD/ GERMAN DONER KEBAB | ILFORD | A rating |
| GDK International Ltd | East Kilbride | A rating |
| GDK Software Ltd | Orpington | A rating |
| GDK2022 Ltd | Plymouth | A rating |
| GDM Food and Wine Ltd | Blackhill | A rating |
| GDM International Ltd | Hayes | A rating |
| GDM LINDEX LIMITED | Newark | A rating |
| GDMP Limited | Bournemouth | A rating |
| GDMS Services London Ltd | Central Milton Keynes | A rating |
| GDS Engineering Limited | Brackley | A rating |
| GDS Pioneering Light Limited | Bristol | A rating |
| GDS PUBLISHING LIMITED | BRISTOL | A rating |
| GE & SW OAKES | MIDDLEWICH | A rating |
| GE Aviation Systems Limited | Cheltenham | A rating |
| GE IMPORT AND TRADE LTDA | LONDON | A rating |
| GE Medical Systems Limited | Chalfont St. Giles | A rating |
| GE Vernova International LLC | Leeds | A rating |
| GE-Solution Ltd | Brentford | A rating |
| GE66 LIMITED T/A Tiraffe | London | A rating |
| GEA Refrigeration UK Ltd | Sittingbourne | A rating |
| GÉANT Association | Cambridge | A rating |
| GEAPP UK Limited | London | A rating |
| Gear Construction UK Limited | Waltham Cross | A rating |
| Gear Pump Distributors (UK) Limited | Bromsgrove | A rating |
| Gear4music Ltd. | York | A rating |
| Gearbox Central Limited | Oldbury | A rating |
| GEARBOX OILS LIMITED | South Ockendon | A rating |
| Geared Consulting Partnerships Ltd | Aylesbury | A rating |
| Gearset Limited | Cambridge | A rating |
| Geberit Sales Limited | Warwick | A rating |
| Gebhardt Intralogistics UK Limited | Nottingham | A rating |
| GEC Power Ltd | Newcastle Upon Tyne | A rating |
| Gecko Programmes Limited | Wolverhampton | A rating |
| GECKO TELEMATICS LTD | BRADFORD | A rating |
| Gecko Theatre | Ipswich | A rating |
| GECO International Limited | Liverpool | A rating |
| Gedeon Richter (UK) Limited | London | A rating |
| Gedling & Sherwood Cricket Club | Nottingham | A rating |
| Gedling Borough Council | Nottingham | A rating |
| Gedling Colliery Cricket Club | Nottingham | A rating |
| GEE Expandly Ltd | Southampton | A rating |
| GEEKPHONE LTD | London | A rating |
| Geekplus UK Limited | Daresbury | A rating |
| Geeks and Beats Ltd | Ilford | A rating |
| Geeks Ltd | Sutton | A rating |
| Geely Auto UK Limited | Milton Keynes | A rating |
| Geely Design UK Ltd | Coventry | A rating |
| Geewick Limited | London | A rating |
| Geezit Ltd. t/a the Tour Company | Glasgow | A rating |
| Gefyra Waterproofing Limited | London | A rating |
| GEG (Holdings) Limited | Inverness | A rating |
| GEG Capital Investments Limited | Inverness | A rating |
| Gegend LTD | London | A rating |
| Geisha Leisure Ltd | Newcastle upon tyne | A rating |
| GEIST PILATES LTD | London | A rating |
| Geku UK Ltd. | Rochester | A rating |
| GELATO A CASA UK LTD | London | A rating |
| Gelato Amore Mio Ltd. | Swindon | A rating |
| Gelato Group UK Limited | London | A rating |
| Gelato Italia Wholesale | Shoeburyness | A rating |
| Gelatoes House (Colchester) Ltd | London | A rating |
| Geldenhuys Limited | Molesey | A rating |
| Gelf Ltd T/A Back On Track Coffee | LONDON | A rating |
| Gelion Europe Ltd | Norwich | A rating |
| Gelion PLC | Norwich | A rating |
| Gella Care Services Ltd | St. Neots | A rating |
| Gellatly Enterprises Limited | London | A rating |
| Geloo Brothers Limited | Blackburn | A rating |
| Gelwar Limited | London | A rating |
| Gem Cable Solutions | St Albans | A rating |
| GEM CARE AND SUPPORT LTD | West Malling | A rating |
| Gem Compliance Consulting Ltd | Edinburgh | A rating |
| GEM CONSTRUCTION SERVICES (UK) LTD | ISLEWORTH | A rating |
| Gem Corporations Limited | London | A rating |
| GEM Data Group UK Limited | London | A rating |
| GEM Environmental Building Services Ltd | London | A rating |
| Gem Holistic Care Ltd T/A Brambling House | Dover | A rating |
| Gem La Viva Jewellery UK Ltd | England | A rating |
| GEM OF NORWICH LTD | Gillingham | A rating |
| GEM&CO LTD | London | A rating |
| GEMBA FINANCE LTD | London | A rating |
| Gemco UK Limited | Hebden Bridge | A rating |
| Gemcorp Capital (Services) Limited | London | A rating |
| GEMEC LIMITED | BOREHAMWOOD | A rating |
| Gemfields Limited | London | A rating |
| Gemini 2000 Ltd | Poole | A rating |
| Gemini Care Ltd, | Ipswich, | A rating |
| Gemini Cars Ltd | KEMPSTON | A rating |
| Gemini Dynamics PLC | Harefield | A rating |
| Gemini Exclusive Care Ltd | Milton Keynes | A rating |
| Gemini Foods Ltd | East Tilbury | A rating |
| Gemini Freight Management Ltd | Greenhithe | A rating |
| GEMINI INTERNATIONAL MARKETING UK LIMITED | London | A rating |
| Gemini Office Services UK Limited | London | A rating |
| Gemini Payments UK Ltd | London | A rating |
| Gemini Rail Services (UK) Limited | Wolverton | A rating |
| GEMINI TRADERS LTD | Oldham | A rating |
| Gemmell Financial Services Limited T/A Gemmells | St Albans | A rating |
| GEMMOLOGY ROCKS LIMITED | Maidstone | A rating |
| Gemological Institute of America London (GIA England t/a GIA London) | London | A rating |
| Gemporia Limited | Redditch | A rating |
| Gemraj Technologies Ltd. | Rayleigh | A rating |
| Gems Builders Ltd | Romford | A rating |
| Gemsstock Limited | London | A rating |
| Gemstage Ltd | London | A rating |
| GEMSTONE CARE LTD | LOUGHTON | A rating |
| Gemstone IT Services Ltd | Chorleywood | A rating |
| Gen 2 Carbon Limited | Coseley | A rating |
| Gen AI ML Ltd | London | A rating |
| GEN DRYWALL LIMITED | Horley | A rating |
| GEN II Services (Uk) Limited | London | A rating |
| Gen Zeal | Sale | A rating |
| Gen-C Ltd | Dinnington | A rating |
| Gen. Impact Ltd | Banstead | A rating |
| GENARO LTD | LONDON | A rating |
| GENASYS TECHNOLOGIES UK LTD | London | A rating |
| Genavest Capital Limited | Sevenoaks | A rating |
| Genbros Ltd | Eltham | A rating |
| Gencare Limited | London | A rating |
| Gencell Technical Services Limited | LONDON | A rating |
| GENCO GLOBAL LTD | BIRMINGHAM | A rating |
| GENDA Europe Ltd | London | A rating |
| Gendan Limited | Swansea | A rating |
| GENDERGP EDUCATION LTD | London | A rating |
| Gendros Baptist Church | Swansea | A rating |
| GENE Commerce Ltd | Brighton | A rating |
| Gene Weaver Ltd | Helions Bumpstead | A rating |
| Genedata ltd | Duxford | A rating |
| GENEDRIVE DIAGNOSTICS LTD | Manchester | A rating |
| Genel Energy UK Services Limited | London | A rating |
| General All Purpose Plastics Ltd | Blackburn | A rating |
| General Assembly Space Limited | London | A rating |
| GENERAL ATLANTIC LIMITED | LONDON | A rating |
| General Catalyst Group Management UK Limited | London | A rating |
| General Chiropractic Council | Kennington | A rating |
| General Conference of Seventh-day Adventists, Trans-European Division | St Albans | A rating |
| General Dental Council | London | A rating |
| General Dynamics United Kingdom Limited | Newport | A rating |
| General Fusion UK Limited | London | A rating |
| GENERAL HEALTHCARE LTD | Hayes | A rating |
| General High Voltage Industries Ltd | Bridgnorth | A rating |
| General HVAC Solutions UK Ltd | Elstree | A rating |
| General Index Ltd | London | A rating |
| General Intuition UK Ltd | Stockport | A rating |
| General Medical Council | Manchester | A rating |
| General Medicare Ltd | London | A rating |
| General Mills (UK) Ltd | Uxbridge | A rating |
| General Nuclear International Limited | London | A rating |
| General Pharmaceutical Council | London | A rating |
| General Physics (UK) Ltd | London | A rating |
| General Projects RE Ltd | London | A rating |
| General Reasoning Ltd | London | A rating |
| GENERAL SOFTWARES LIMITED | LONDON | A rating |
| General Sports Europe Ltd | Wilmslow | A rating |
| General Store Pentre Halkyn Ltd | Liverpool | A rating |
| General Synod of the Scottish Episcopal Church | Edinburgh | A rating |
| General Traders and Products Limited | London | A rating |
| General Trading Services Limited T/A GTS | Ballyclare | A rating |
| GENERAL TRAFFIC LTD | Bolton | A rating |
| Generali Real Estate S.P.A | London | A rating |
| GeneralMedicalServices Ltd | STOKE ON TRENT | A rating |
| Generate FS Ltd | London | A rating |
| Generate Partners Ltd | Henley on Thames | A rating |
| Generate UK Holdings Limited | London | A rating |
| Generated Health Limited | London | A rating |
| Generation 10 Limited | Liverpool | A rating |
| Generation 3 Limited | Winchester | A rating |
| Generation Asset Management (UK) Ltd | London | A rating |
| Generation Investment Management LLP | London | A rating |
| Generation Media Limited | London | A rating |
| Generation Phoenix Ltd | Alwalton Hill | A rating |
| GENERATIONS 2019 LTD T/A KING'S DINNER | GOSPORT | A rating |
| Generations Care Agency | Chesterfield | A rating |
| Generative Finance Technologies Limited | London | A rating |
| Generative Parametrics Ltd | Melksham | A rating |