Bar end weights?

After swapping my handlebars today in favor of straight ones (: I no longer have bar end weights because there is no place on the new ones to screw them into… The receiving end just won’t come out of the old set, and the old ones are pretty ground down anyway.

Does anyone know a nice shop that has a good selection (different colors/weights/designs) of bar end weights? Or a spare set (with rubber inserts) kicking around the garage?

we have some at rex judds,clothing side of shop is nothing to do with main shop,2 shops one oppersite west hampstead tube station,west end lane.
the other is burnt oak,edgware road A5