| Literal Labs Ltd | |
| Litmus Partnership Ltd | |
| LITTLE | |
| Little Fire Digital Ltd | |
| Little Journey | |
| Little Voice Communications Ltd | |
| Little Warden Ltd | West Yorkshire |
| Littledata | |
| littledetails.co.uk | Merseyside |
| Littlefish (UK) Ltd | Nottinghamshire |
| Litvinsky | Greater London |
| LivaNova plc | |
| Live Computers | Hertfordshire |
| LiveCode Ltd | Edinburgh |
| Livedrive Internet Ltd | |
| Livelink New Media | Greater Manchester |
| LiveLogic Ltd | |
| Liverpool Hope University | Merseyside |
| Liverpool Innovation Park | |
| Liverpool John Moores University | |
| Liverpool Linux User Group | Merseyside |
| Liverpool School of Tropical Medicine | |
| Livetech Ltd | Conwy |
| Livetodot | Hampshire |
| Livewire Digital Ltd | |
| Livingstone Technologies Ltd | Berkshire |
| LiX FX Ltd | |
| Lizard Design Ltd | Essex |
| LizardStudio Ltd | East Sussex |
| LJT Systems Ltd | |
| LK Agency | |
| LK Communications | |
| Llama Digital Ltd | South Yorkshire |
| Llusern Scientific Ltd | |
| LM Lakeland Design | Cumbria |
| Lnet Digital | |
| Loaded Dice | Hertfordshire |
| Loadpoint Ltd | Wiltshire |
| Loadsure Ltd | |
| Loaf | |
| Lobo Creative | |
| Local Fame | |
| Local IBS | |
| Local Rank Booster | |
| Local Search SEO | |
| Local SEO UK | Cumbria |
| Local Services Marketing | |
| LocalGlobe | Greater London |
| Localistico | |
| Localphone Ltd | South Yorkshire |