Pay attention to the OLD of your fork as well. Raleigh forks are spaced at 90mm, but use has often changed this; most I've seen get narrower somehow. If you're going to stick a modern 100mm OLD hub in a Nottingham fork, you'll need the blades widened and the dropouts modified. A standard 9mm axle from a new hub won't fit a Sports model from any of the TI Raleigh subsidiaries, as they used axle washers with a flange/spacer to center them in the fork. The dropouts are rather keyhole shaped so the axle will fit in then the washers will center the axle in the larger hole in the dropout; it also acts like a "lawyer" tab.
You've already got your rims, but for thread info's sake, Velocity currently offers the Dyad and the Atlas in 650B with 32, 36, 40 hole drillings. I'm probably going to be using the Atlas for a set of rider wheels on my *fingers crossed* new-to-me Rudge Clubman. What can I say, I have a Sturmey AW Alloy hub that needs a bike to reside in.