I see that YST make a threadless Bottom bracket
so you dont have to mess with getting Phill wood cups or rettapping
they seem to be in 110mm to 122mm
but the ones Ive seen are only for 68mm wide shells.
http://www.edinburghbicycle.com/ebwP...c003151c003226

YST also have the One peice bb shell to 3 peice BB axle. Like I fitted to my /city Boy folding bike. Got a nice looking one with sealed bearings and alloy cups.

Also seen a brand called Pristine. Its a 70 mm shell width. So might fit right in there. http://www.sjscycles.co.uk/product-0...eads-16505.htm