Syysista,
Generally all airlines do ask for uniforms to be handed back when a change is due. I am now unfortunately now back on terra firma (of clipped wings!) and personally think that a collection like mine is a really nice way of keeping memories of different eras within airlines alive!
We must have spent thousands of pounds on our collection, but I think its worth it - to me flying is still romantic, and this is a nice way of preserving it!
Ebay are fine about selling uniform items , almost all if it is not 'current' uniform so it poses no security threat. Anyway i guess it would be far more dangerous to go to a fancy dress shop and hire a police uniform or a pilots uniform.
We still need a lot to complete our collection, so again if anyone has anything - please don’t take it to the charity shop ! lol ... drop me a PM!