As the title says, make a POD in the boundaries made by the forum in which the two largest parties in Britain by the early 21st century is the Liberals (or a suitable successor), and Labour.
Tories can exist, but must be consistently smaller then either of the two parties.
Preferably no larger then the LibDems are in OTL.
Tories can exist, but must be consistently smaller then either of the two parties.
Preferably no larger then the LibDems are in OTL.