I have a complete set of SA wheels, approx 5 years old - 36 hole, 5 speed, drum brakes and dyno front hub c/w shifter, sporcket, nuts & all fittings etc stainless spokes laced to wide, shiny 26 x 1 3/8" chromed rims and tyres - all in VGC+ and would be perfect for your Pashley I reckon! Won't be super cheap though, the hubs alone are £200 a pair on SJS website (I was looking to sell them and keep the rims but I haven't got round to it yet!)
Plus I have a spare set of vintage 3 speed drum brake hubs too, from an '80s Gazelle, if you have rims (the ones that came laced to these hubs were 700c).