700007
Established Member
I was skim reading this, so may have easily missed it - But Euston to Euston Square to Warren Street to Great Portland Street to Regents Park?
I find it quicker to go from Bank to Cannon Street rather than Bank to Monument thanks to the new entrance. Saves me a lot of time now especially if I am coming off the Central / Waterloo & City lines.Bank to Cannon Street thanks to the new Walbrook entrance. I think it's shorter than the Hammersmiths.
The Aldgates are the closest on different lines that don't form a valid out of station interchange.