I'd go to 48 at the front. 48/18 seems about perfect for nearly all of London. Since I'm an old git, the odd roadie goes past but who cares? I get almost anywhere with virtually no effort. Also, to break rank, I've moved out of clipless and gone to big platforms with allen bolts sticking out - a better match for scrapes with 4x4s.
I'd go to 48 at the front. 48/18 seems about perfect for nearly all of London. Since I'm an old git, the odd roadie goes past but who cares? I get almost anywhere with virtually no effort. Also, to break rank, I've moved out of clipless and gone to big platforms with allen bolts sticking out - a better match for scrapes with 4x4s.