- Lara BirdConstituency: Arbroath and Broughty FerryParty: Scottish National Party
- Laura Kyrke-SmithConstituency: AylesburyParty: Labour
- Laura TrottConstituency: SevenoaksParty: Conservative
- Lauren EdwardsConstituency: Rochester and StroodParty: Labour
- Laurence TurnerConstituency: Birmingham NorthfieldParty: Labour
- Layla MoranConstituency: Oxford West and AbingdonParty: Liberal Democrat
- Lee AndersonConstituency: AshfieldParty: Reform UK
- Lee BarronConstituency: Corby and East NorthamptonshireParty: Labour
- Lee PitcherConstituency: Doncaster East and the Isle of AxholmeParty: Labour
- Leigh InghamConstituency: StaffordParty: Labour
- Lewis AtkinsonConstituency: Sunderland CentralParty: Labour
- Lewis CockingConstituency: BroxbourneParty: Conservative
- Liam ByrneConstituency: Birmingham Hodge Hill and Solihull NorthParty: Labour
- Liam ConlonConstituency: Beckenham and PengeParty: Labour
- Lilian GreenwoodConstituency: Nottingham SouthParty: Labour
- Lillian JonesConstituency: Kilmarnock and LoudounParty: Labour
- Lincoln JoppConstituency: SpelthorneParty: Conservative
- Linsey FarnsworthConstituency: Amber ValleyParty: Labour
- Lisa NandyConstituency: WiganParty: Labour
- Lisa SmartConstituency: Hazel GroveParty: Liberal Democrat
- Liz JarvisConstituency: EastleighParty: Liberal Democrat
- Liz KendallConstituency: Leicester WestParty: Labour
- Liz Saville RobertsConstituency: Dwyfor MeirionnyddParty: Plaid Cymru
- Liz TwistConstituency: Blaydon and ConsettParty: Labour
- Lizzi CollingeConstituency: Morecambe and LunesdaleParty: Labour
- Llinos MediConstituency: Ynys MônParty: Plaid Cymru
- Lloyd HattonConstituency: South DorsetParty: Labour
- Lola McEvoyConstituency: DarlingtonParty: Labour
- Lorraine BeaversConstituency: Blackpool North and FleetwoodParty: Labour
- Louise HaighConstituency: Sheffield HeeleyParty: Labour
- Louise Sandher-JonesConstituency: North East DerbyshireParty: Labour
- Lucy PowellConstituency: Manchester CentralParty: Labour (Co-op)
- Lucy RigbyConstituency: Northampton NorthParty: Labour
- Luke AkehurstConstituency: North DurhamParty: Labour
- Luke MurphyConstituency: BasingstokeParty: Labour
- Luke MyerConstituency: Middlesbrough South and East ClevelandParty: Labour
- Luke PollardConstituency: Plymouth Sutton and DevonportParty: Labour (Co-op)
- Luke TaylorConstituency: Sutton and CheamParty: Liberal Democrat