Thanks for the replies so far.
Here are some more pictures before diassembly (apologies that some of them are of the bike upside down which I took mainly for reference of where fastenings and cables were located for when I put it back together).
You can see how wide the chainstay is compared to most Raleigh roadsters. It looks about twice the normal width.
The tires are 54-571
I plan to use rod actuation onto the exisiting hubs