| Happy Mindful Child Ltd | London | 2026 |
| Happy Minds Kids Academy Limited | Burnley | 2017 |
| Happy Minds Learning Hub Ltd | Newport | 2026 |
| Happy Mindz Limited | Fareham | 2015 |
| Happy Mojos Ltd | Radstock | 2022 |
| Happy Music Ltd | Manchester | 2012 |
| Happy Nursery Days (Tulse Hill) Ltd. | | 2004 |
| Happy Nurses Ltd | Burton-On-Trent | 2023 |
| Happy Orkids at Dartford Limited | Meadowfield Industrial Estate | 2025 |
| Happy Orkids Ltd | Ilford | 2021 |
| Happy Owls Ltd | Canterbury | 2021 |
| Happy Pace Ltd | Oxted | 2024 |
| Happy Panda Chinese Language School Limited | London | 2025 |
| Happy Parents Happy Baby Ltd | Southend-On-Sea | 2018 |
| Happy Place Child Care Wootton Ltd | London | 2026 |
| Happy Place Workshop Ltd | Carluke | 2023 |
| Happy Rainbows Ltd | Wolverhampton | 2008 |
| Happy Sandpit Limited | Hoddesdon | 2023 |
| Happy Science Europe | London | 2000 |
| Happy Smiles Training CIC | Wigan | 2019 |
| Happy Soul Community Ltd | Llanelli | 2024 |
| Happy Soul Group Ltd | Llanelli | 2023 |
| Happy Stars Day Nursery Ltd | | 2007 |
| Happy Stars Limited | North Lincolnshire | 2001 |
| Happy Steps Nursery Limited | Worthing | 2016 |
| Happy Students Happy Tutors Limited | London | 2025 |
| Happy Study EDU Ltd | Derby | 2024 |
| Happy Swimmers Ltd | Nottingham | 2024 |
| Happy Tails Petting Club Ltd | London | 2023 |
| Happy Tiddlers Limited | Bedford | 2017 |
| Happy Times Care Club Limited | Newcastle-Under-Lyme | 2010 |
| Happy Toadstools Ltd | Woking | 2010 |
| Happy Toddlers Ltd | London | 2023 |
| Happy Todds Nursery Ltd | Golders Green | 2014 |
| Happy Tots Day Nursery Limited | Oldham | 2013 |
| Happy Tree (West Drayton) Ltd | Borehamwood | 2009 |
| Happy Tree Academy Ltd | Northwood | 2015 |
| Happy Tutor Ltd | Hornchurch | 2023 |
| Happy Tykes Preschool Ltd | Bedworth | 2003 |
| Happy Valley PRE School Brighton Ltd | Brighton | 2018 |
| Happy Violin Ltd | Stourbridge | 2018 |
| Happy Wheelz Limited | Kettering, Northamptonshire | 2024 |
| Happy Women of Belfast Limited | Belfast | 2025 |
| Happy Yoga Newcastle Limited | High Heaton | 2016 |
| Happyfeet Preschool Penguins Limited | Scunthorpe | 2025 |
| Happygems Day Care Limited | Chorley | 2012 |
| Happyheartslifecoaching Ltd | Oxford | 2025 |
| Happyme Ltd | Coventry, England, | 2021 |
| Happyoaks Ltd | Marlow | 2025 |
| Happypedagogy Ltd | South Shields | 2023 |
| Happywoods Nursery (Lewisham) Limited | London | 2007 |
| Happywoods Nursery (South Woodford) Limited | Enfield | 2026 |
| Happywoods Nursery Limited | Enfield | 2016 |
| Haptivate Ltd | Dunstable | 2018 |
| HAQ Academy Ltd | Solihull | 2018 |
| HAQ Holdings Ltd | Slough | 2024 |
| HAQ Teaching Limited | Birmingham | 2023 |
| Haqooq Aspire for More | Leeds | 2013 |
| Haqqaneedirect Ltd | Birmingham | 2026 |
| Haque Academy Ltd | London | 2024 |
| HAR Carmel Limited | Manchester | 2023 |
| Harambe Arts Ltd | Peterborough | 2026 |
| Harambee Training Limited | Woodbridge | 2001 |
| Harappa-En Ltd | London | 2025 |
| Harberry First AID Training Limited | Belfast | 2020 |
| Harberton Cricket Club Limited | Devon | 2017 |
| Harborne Academy | Birmingham | 2010 |
| Harborne Football Coaching Ltd | Solihull | 2023 |
| Harbour & Solace Group Ltd | Deal | 2025 |
| Harbour Education Ltd | London | 2026 |
| Harbour Futures Limited | Potters Bar | 2025 |
| Harbour Jewellery Projects CIC | Folkestone | 2026 |
| Harbour Learning Trust | Grimsby | 2010 |
| Harbour Media Limited | Dorchester | 2019 |
| Harbour Training Ltd | Bristol | 2014 |
| Harbourside Marine (Liverpool) Ltd | Liverpool | 2026 |
| Harbourside Sea School Ltd | Liverpool | 2023 |
| Harbury Pre-School | Harbury | 2010 |
| Harc Creative Productions Ltd | Bury | 2026 |
| Harcourt Pre-School Ltd | Bristol | 2016 |
| Harcourt Training and Assessment Ltd | Chesterfield | 2023 |
| Hard AS Limited | Glasgow | 2023 |
| Hard at Work Tuition Limited | Great Dunmow | 2026 |
| Hard Shield Ltd | Portsmouth | 2025 |
| Hard Work Pays OFF Ltd | Manchester | 2018 |
| Hardan Group Ltd | London | 2024 |
| Hardenhuish School Limited | Chippenham | 2010 |
| Hardichymax Global Ltd | Eccles | 2025 |
| Harding Education Ltd | Morpeth | 2021 |
| Hardings (Stewkley) Limited | Leighton Buzzard | 2017 |
| Hardings Smartdrive Limited | Great Yarmouth | 2026 |
| Hardline CQB Ltd | Worcester | 2026 |
| Hardman Fitness Ltd | Sheffield | 2024 |
| Hardpoint Medical Ltd | Bath | 2026 |
| Hardtailchop Ltd | Greenford | 2023 |
| Hardwick & Co Ltd | Liverpool | 2013 |
| Hardwick House School Limited | London | 2013 |
| Hardwired Coaching UK Limited | Rugby | 2023 |
| Hare & Bone Education Ltd | Walton-On-Thames | 2024 |
| Hare Forest School CIC | Bristol | 2023 |