And just to add to Chris' already excellent advice, don't call the Travel Line - they really are quite useless
For example, they gave a lady in the Scottish Borders the phone number for an office in Kent because she wanted a bus that started in Glasgow! This wasn't the only **** up they made during my time in the office
http://www.arriva.co.uk/
You can type in the Town you are travelling from and get all routes with timetables