我想知道點坐地鐵由london去Staffordshire

Where are you planning to go in Staffordshire? What is the actual train station?

Staffordshire is outside London Underground system. So you will have to take trains.

for example: with Virgin Train, London Euston to Stafford:

Outward journey: Monday 9 July 2007 Station Arr Dep Travel by Service Provider
LONDON EUSTON 20:17 Train VIRGIN TRAINS
STAFFORD 21:47

Journey is 1 hr 30 minutes.


SAVER RETURN
45.10 pounds

You can refers to www.thetrainline.com for more information.

Hope this helps.