| Guided & Glowing Ltd | Midlothian | 2025 |
| Guided Digital Childhood Ltd | Winscombe | 2026 |
| Guided E-Learning Limited | London | 2006 |
| Guided Education Hub Ltd | Devizes | 2025 |
| Guided Learning Limited | Brentwood | 2018 |
| Guided Pathways & Futures CIC | London | 2024 |
| Guided Pathways Ltd | London | 2022 |
| Guided Souls Ltd | London | 2021 |
| Guideline Genius Ltd | London | 2024 |
| Guidepost Leadership Ltd | Hexham | 2012 |
| Guidewaves Ltd | Leigh-On-Sea | 2025 |
| Guiding Lights Mentoring CIC | Redditch | 2025 |
| Guiding Lights Organisation Ltd | London | 2025 |
| Guiding Star Send & Dyslexia Ltd | Rochester | 2024 |
| Guiding Stars Consulting Ltd | Alton | 2021 |
| Guiding Stars Mentor Programme Ltd | Bradford | 2023 |
| Guidix Business School Ltd | West Drayton | 2025 |
| Guild Academy Group Ltd | Preston | 2018 |
| Guild Educational Services Limited | Watford | 2022 |
| Guild Futures Limited | London | 2025 |
| Guild London Limited | Ilford | 2023 |
| Guild of Gundogs Ltd | New Milton | 2026 |
| Guild of PRE & Post Natal Exercise Instructors CIC | Warrington | 2021 |
| Guildford Business College Limited | London | 1994 |
| Guildford Judo Club Limited | Woking | 2019 |
| Guildford Rock School Ltd | Guildford | 2020 |
| Guildford School of Counselling Limited | Molesey | 2008 |
| Guildford Sportsground Management Company Limited | Guildford | 2019 |
| Guildford Youth Symphony Orchestra Limited | Camberley | 2023 |
| Guildhall Recycled Fashion Limited | Derry | 2015 |
| Guildhe Limited | London | 1991 |
| Guildhouse School Limited | Cambridge | 2010 |
| Guildomatic Driving School Limited | Guildford | 2025 |
| Guilsborough Multi Academy Trust | Northampton | 2011 |
| Guinea Lane Nursery Limited | Bath | 2010 |
| Guinness Associates Limited | Marlborough | 2023 |
| Guisborough Town Football Club | Guisborough | 2023 |
| Guiseley Childrens Day Nursery Limited | Leeds | 2005 |
| Guisss Tuition Limited | London | 2025 |
| Guitar and Music Online Learning Ltd | Edinburgh | 2013 |
| Guitar Circus Ltd. | Cirencester | 2006 |
| Guitar Cities Limited | Cardiff | 2011 |
| Guitar Dreams Ltd | Tadcaster | 2025 |
| Guitar Instructor Ltd | Inverness | 2025 |
| Guitar Made Easy Limited | Tadcaster | 2023 |
| Guitar Tuition East London Limited | London, | 2016 |
| Guitargo Ltd | Lymington | 2018 |
| Guja Global Services Ltd | London | 2026 |
| Gulf Conferences Ltd | London | 2013 |
| Gulf Education Partners Ltd | Derby | 2025 |
| Gulf English Education Ltd. | Edgware | 2016 |
| Gumley House Convent School FCJ | Isleworth | 2012 |
| Gummy Bears Nursery Limited | Ferndown | 2014 |
| GUN Fit UK Ltd | Brighton | 2026 |
| GUN FUN UK Limited | Brighton | 2022 |
| Gundog Trainers Academy Online Ltd | Guildford | 2022 |
| Gunes Education Ltd | London | 2023 |
| Gunes English School Ltd | London | 2026 |
| Guneykisla Dernegi CIC | London | 2024 |
| Gunjon Education (INT) Limited | London | 2021 |
| Gunjon Training Centre Limited | London | 2021 |
| Gurdjieff Studies Limited | London | 2002 |
| Gurkha Day Foundation | London | 2020 |
| Gurmat Therapy Ltd | Coventry | 2020 |
| Gurnard Pre-School | Cowes | 2010 |
| Gurol Ltd | Waltham Abbey | 2021 |
| Guru Driving School Limited | Bordon | 2019 |
| Guru Exam Prep Limited | Baldock | 2017 |
| Guru G Ltd | London | 2024 |
| Guru Maneyo Granth Gurdwara | Slough | 2005 |
| Guru Nanak Nishkam Education Trust | | 2002 |
| Guru Nanak Sikh Academy Limited | Hayes | 2010 |
| Gurukool Education Ltd | Hounslow | 2021 |
| Gurukul 11PLUS Shfld Ltd | Sutton Coldfield | 2026 |
| Gurukul Academy Ltd | Chelmsford | 2021 |
| Gurukul Education Centre of Excellence Ltd | Sutton Coldfield | 2021 |
| Gurukul Ltd | Sutton Coldfield | 2024 |
| Gurukul of Civil Engineers Ltd | Sale | 2018 |
| Gurumu Taekwondo Ltd | Colliers Wood | 2022 |
| GUS Capital (UK) Limited | London | 2014 |
| GUS Services UK Limited | London | 2016 |
| GUS UK Management Limited | London | 2013 |
| Gust Independent School Ltd | Ashington | 2004 |
| GUSTING64 Limited | Tetbury | 2016 |
| GUT Health Matters Ltd | Belfast | 2024 |
| GUT Wealth Group Ltd | Oxford | 2022 |
| Guthrie & Craig (Training Services) Limited | Durham | 2016 |
| Guthrie and Ghani Retreats Limited | Birmingham | 2025 |
| Guthrie and Ghani Workshops Limited | Birmingham | 2022 |
| Gutzfit Ltd | London | 2026 |
| Guulayso Academy Ltd | London | 2026 |
| Guvu Health and Wellbeing CIC | Salford | 2023 |
| GUY and GUY Limited | Dunfermline | 2023 |
| GUY FOX History Project Limited | London | 2007 |
| Guy's College Limited | Cardiff | 2018 |
| GV Academy of Learning Excellence Limited | London | 2014 |
| GV Consulting Limited | London | 2025 |
| GV Swim Science Ltd | Worksop | 2022 |
| GV Training Ltd | Nelson | 2017 |
| GVA London Ltd | Ilford | 2019 |