Does anybody know of a suitable source of locking filler caps for use on a locost, that will fit on to a mk2 escort filler neck?

The escort cap is designed for a recess so is not ideal (without a cover being made for it) on a locost, and I need a new one any way due to a key breaking off in the donor's filler cap.

I used Fiat Panda, look in my archive in the SVA folder