This thread https://www.railforums.co.uk/threads/fastest-time-record-between-london-and-newcatsle.249514/ tells of a 2½ hour journey from London to Newcastle.
The fastest trains on the 165 mile Swansea - Paddington route are about 2¾, could that be shaved down to 2½ with the current infrastrucure and stock if all the pathing conflicts could be ironed out? Indeed, what's the fastest feasible journey time?
The fastest trains on the 165 mile Swansea - Paddington route are about 2¾, could that be shaved down to 2½ with the current infrastrucure and stock if all the pathing conflicts could be ironed out? Indeed, what's the fastest feasible journey time?