I often make the journey from either Windsor & Eton Riverside (WNR) or Windsor & Eton Central (WNC) into London, buying a Day Travelcard from one of the stations. Like, I am sure, many people travelling from Windsor into London, the choice of station is partly determined by which part of London you need to travel to - Central, via Slough, takes you to Paddington, and Riverside takes you to Waterloo. They are about 8 minutes' walk apart, and the National Rail website lists then as a station interchange.* My question is, is it possible to buy a Travelcard which allows you to travel into London via one route, and out of London on the other? I have done this a few times, both ways round, after a member of staff at Paddington told me that it was permitted - and I know quite a few people who routinely do this. But yesterday at Slough, having travelled into London via Waterloo and out via Paddington, I was told that my Travelcard was only valid to the boundary of Zone 6, i.e West Drayton and that I needed to buy an additional ticket from the Z6 boundary onwards back to Windsor & Eton Central. (The guy actually selling the ticket initially told me I needed to buy one all the way from Paddington, but I pointed out the Zone 6 validity). I see from easement number 700084 in the ATOC routeing guide documents that... ...but what ticket do I buy if I do want to do this? Is there anything that will allow flexibility to use either route? If you use the National Rail journey planner to search for WNR to WNC, with Paddington specified as a 'via' it sends you via Reading! Thanks for your help. I'm new to this, so apologies if this has been discussed before or if the answer is obvious. There must be similar problems in other towns with two stations on different lines. There are related discussions in this thread and this thread but I couldn't find the exact answer. *If you search using the journey planner for Windsor & Eton Riverside - London, every other result usually starts "walk to Windsor & Eton Central".