That is bad luck but I wouldn't rule out a UK supplier, it's only postage after all.
If you can't source one locally (surely you have breakers) or obtain a new one as Shayne suggests, then try Karl (on this forum) and see what can be arranged by post or courier.
Normally, a second hand door would be sold complete, but there must be damaged doors with good glass. In the meantime, you could replace it with some ally plate cut to the right size, and do the job properly later.
Don't give up.