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- Lancashire United
- Lancashire United Transport
- Leicester City Transport
- Leicester Citybus
- Leon Motors
- Lincoln City Transport
- LinkUp
- Lionspeed
- Lloyds Coaches
- London Central
- London Country Bus Services
- London Country North East
- London Country North West
- London Country South East
- London Country South West
- London & Country
- London Easylink
- London Electrobus Company
- London Forest
- London General
- London General Omnibus Company
- London Pride Sightseeing
- London Traveller
- Lothian Buses
- Lowland Scottish
- Lucketts Travel
- Ludlows
Read more about this topic: List Of Bus Operators Of The United Kingdom