hey guys and welcome to forum i havent been on the forums much lately but its good to be back been really busy trying to stay up with RL anyway i took the time to do a quick search for the basics in the uk area
Pinned blades
Pinless blades
wow you guys are kinda short on suppliers over there making blades expensive
source for ply of all kinds Here Edens
another source for hardwoods softwoods and ply Here Latham timber ltd
Online retailer Online timber sales UK
for other basic tools i like to have on hand is a bit of furniture grade wax, a 6" random orbital sander(ROS for short), assortment of 6" sanding disks from 32 to 600 grits, assortment of sanding mops, spray adhesive i get mine at walmart, elmers brand,contact paper works really good for applying patterns to, a small set of needle files, a small pick comes in handy to remove smaller pieces from your project