I will start off

Firstly I would put buses under control (where by the govenment chooses where the buses run like in london unlike the free for all you get in other places)
More money to be invested in rail infulstructure including electrification, of certain lines (basingstoke-reading) to allow cross country trains to be powered electicly (or be it from 3rd rail and overhead).
Trams, and Trams galore (yes I have just been back from croydon) but trams realy could solve some serious issues in the bigger cities, this would bring us more inline with our european counterparts.
Keep roads open but greatly restrict the construction of new roads.
Intergrate transport systems so people can walk straight from a bus onto a train which is offen not the case in Britain.
So that is what I think, but the question is what do you?