Of course Lib Dems are left wing. Why else did the gang of four go there?

Labour's recent lurch to the left leaves a moderate left of center position available for the Libs. They are currently almost leaderless so whether or not they actually go there is not certain. They will be fighting for some of that space with the current government which has partially moved into that vacuum. Although that will no doubt be contested by the UK Lefties on this forum.