| Gift Shop Limited | London | 2009 |
| Gift the Change Limited | Grimsby | 2019 |
| Gifted Hands Africa Ltd | Doncaster | 2020 |
| Gifted Stationery Holdings Limited | Swanley | 2021 |
| Gifteffects UK Private Ltd | Basildon | 2018 |
| Gifts & Go Ltd | Cirencester | 2011 |
| Gifts for Gentlemen Limited | Plymouth | 1999 |
| Gifts With Care Limited | Tewkesbury | 2018 |
| Giftware Company Limited | Rhyl | 2024 |
| Gigabyte Solutions Limited | Lancashire | 1995 |
| Gigalandlord Ltd | London | 2025 |
| Gigaport Print and Communications Limited | Walsall | 2008 |
| Gigaprint Ltd | Brighton | 2023 |
| Giggle City Ltd | Clacton-On-Sea | 2009 |
| Giggle Computers Ltd | Nottingham | 2011 |
| Gigglepin 4X4 Limited | Tonbridge | 2008 |
| Gigglepops Ltd | Manchester | 2025 |
| Giggles Nursery Limited | Cheltenham | 2010 |
| Giggles of Lytham (Day Nursery) Ltd | London | 2004 |
| Gigglybits Ltd | Nottingham | 2014 |
| Giggz Design & Build Limited | Ruislip | 2005 |
| Gigi Sailing Team Limited | London | 2022 |
| Gigpro (UK) Limited | London | 2020 |
| Gilbert 1970 Limited | Doncaster | 2013 |
| Gilbert Allen Limited | West Malling | 2022 |
| Gilbert Industries Limited | Solihull | 2016 |
| Gilbert Robbins Ltd | Ettrickbridge | 2024 |
| Gilbert-Ash Fitout Limited | Belfast | 1976 |
| Gilberts Limited | St. Albans | 1989 |
| Gilby-Brunton Limited | Industrial Estate, Musselburgh | 1936 |
| Gilchristland Limited | London | 2016 |
| Gilchrists Company Secretarial Services Limited | London | 2001 |
| Gildales Limited | London | 2003 |
| Gildredge Estates UK Ltd | Hailsham | 2013 |
| Giles Bros Construction UK Ltd | Braintree | 2022 |
| Giles Fullerton (East Anglia) Limited | Camberley | 2003 |
| Giles Hilton Tea Company Limited | Sevenoaks | 2013 |
| Gilgal Holdings Limited | Slough | 2025 |
| Gilitta Limited | Manchester | 2024 |
| Gilkes Pumping Systems Limited | Cumbria | 1998 |
| Gill & Co (GB) Limited | London | 2013 |
| Gill & Jones Ltd | Builth Wells | 2020 |
| Gill Aggregates (Bagging) Ltd | Gravesend | 2011 |
| Gill and Macmillan (UK) Limited | Basingstoke | 2010 |
| Gill Barker Limited | Wigan | 2013 |
| Gill Engineering Limited | Southampton | 1984 |
| Gill Investments Limited | Birmingham | 2003 |
| Gill Knitwear Limited | Birmingham | 1982 |
| Gillani & Co Limited | Waltham Cross | 2009 |
| Gillbard Limited | Crediton | 2010 |
| Gillcrest Assets the Paper Mill Limited | Rochester | 2013 |
| Gillcrest the Paper Mill Estate Limited | Rochester | 2013 |
| Gilles Vallet Limited | Wantage | 2012 |
| Gillespie & Jackson Limited | Birmingham | 2008 |
| Gillian Arnold Manufacturing Limited | Bishop Auckland | 2022 |
| Gillian Arnold North Limited | Bishop Auckland | 2022 |
| Gillian Arnold Online Limited | Bishop Auckland | 2022 |
| Gillian Arnold Training Limited | Bishop Auckland | 2022 |
| Gillian Cawthorne Limited | Peterborough | 2023 |
| Gillian England Limited | Derby | 2024 |
| Gillian King School of Music and Dramatic Art Limited | London | 2025 |
| Gillian Lewis Oliver Pearce Limited | Gunnislake | 2025 |
| Gillian Margaret Tracey Ltd | Wantage | 2025 |
| Gillian Suzanne Marks Ltd | London | 2024 |
| Gillian Suzanne Pelage Ltd | London | 2024 |
| Gillie Property Services Holdings Limited | Newcastle Upon Tyne | 2025 |
| Gillies Fabrics Limited | York | 2014 |
| Gillingham 1969 Limited | Gillingham | 2014 |
| Gillivervet Limited | York | 2002 |
| Gillroy Associates Limited | Leatherhead | 2011 |
| Gills Fresh Meats Limited | Leicestershire | 1982 |
| Gills Fruit Fusions Limited | Newent | 2010 |
| Gills Hill Limited | Radlett | 2024 |
| Gills Meat Halls Limited | Leicestershire | 1967 |
| Gilly's Lifestore Ltd | Doncaster | 2017 |
| Gilmoor Vets Limited | York | 2010 |
| Gilmore Marina Limited | Lisburn | 2015 |
| Gilmour Associates Ltd | Egham | 2023 |
| Gilmour Tooling Limited | Stanley | 2024 |
| Gilpins the Shop for MEN Limited | Newtownabbey | 1927 |
| Gilroy Contracts & Groundswork Ltd | Bristol | 2022 |
| Gilroy Employee Trustee Limited | Hook | 2024 |
| Gilstock Limited | Brackley | 2023 |
| Gimel London Limited | Harrogate | 2012 |
| Gimmejobs Limited | Liverpool | 2000 |
| Ginai Healthcare Limited | St. Neots | 2024 |
| Gincredible Limited | Harrogate | 2026 |
| Gindola Traders Limited | London | 2014 |
| Ginfinity Ltd | London | 2025 |
| Ginger Sea Ltd | London | 2021 |
| Ginger Taverns Limited | York | 2001 |
| Ginger Tree Properties Ltd | Slough | 2022 |
| Ginger Unicorn Ltd | Edinburgh | 2021 |
| Ginger Wings Events Ltd | Cambridge | 2023 |
| Gingerbray Limited | London | 1973 |
| Gingerfizz Ltd | Blyth | 2013 |
| Gingerjar (Couture) Ltd | Darlington | 2012 |
| Gingiberi Limited | London | 2024 |
| Gingko Investment Limited | Cambridge | 2024 |
| Ginibee Limited | Knaresborough | 2013 |