Is there a website which works out the best way from an NR station to an Underground station and provides timings . As an example, if I was travelling from, say, Cambridge (NR) to Oxford Circus. I know that if you enter Cambridge to London St Pancreas the NR website will display direct trains and, also, the timings of going Cambridge - Liverpool Street - St Pancreas etc. but I can't work out how you you do this to another Underground station!