Travelling by train to Norwich from Central London.

The mainline London rail station for trains to Norwich is Liverpool Street. Please see http://www.nationalrail.co.uk/ for train times.

You can save money by booking your ticket in advance:
http://www.thetrainline.com/buytickets/?

You can save money by buying a Young Persons railcard:
http://www.16-25railcard.co.uk/online

For travel in London, please see http://www.tfl.gov.uk/