I want to upgrade to 13 inch rims for my MK1 Escort. Can anybody instruct which stock rims will fit? I had a set from a TD Cortina but the fronts rubbed against the struts. Also if there is a suitable set for sale for sale that would be good. Thanks.

You need escort rims. Mk2's will fit fine.
Later model Cortina etc are different offset. Early model lotus steels are good to get as they give a touch more track.

If you were local i could probably even do a set for cheap.. but im in Sydney.
Im sure there a re some local forum members that can help you out.