I did read somewhere of another Cambridge to Liverpool Street fast service planned, possibly just Tottenham Hale and one of Bishops Stortford/Harlow only.
If it could get under an hour, it might prove competitive. And maybe send that one to Kings Lynn - and the other KX fast is free to go to Norwich (in a world of wires!)
If it could get under an hour, it might prove competitive. And maybe send that one to Kings Lynn - and the other KX fast is free to go to Norwich (in a world of wires!)