Sorry, me again! I have a annual season ticket from Shawford to London terminals, via any permitted route. I want to travel up to Birmingham, so where do I need to buy a ticket from? I travel to London via SWT, but there is a XC service from Winchester to Birmingham which I'll get. Can I buy a Reading to Birmingham ticket (ie is my season to London valid travelling via Reading to Paddington)? Or do I need Basingstoke to Birmingham? Does it matter that it's a XC service rather than SWT?