Teens - Start from Cowdenbeath Railway station. Then perform a treble longitude move towards either Falkirk or Carlisle. A double-duck via Macclesfield to Northwood Hills, avoiding Milton Keynes. It’s that easy.
It wouldn't be difficult to make a proper game of it. A tube map, some counters and dice..... As it is, the whole radio show is a bad practical joke that should have been dropped 40 years ago.
I've just noticed that teenybash unwittingly stated "I haven't got a clue" earlier on this thread in relation to this game. You couldn't get much closer to the programme's title without knowing it...