Thanks Pursya,
I should have done this to start with....measure the studs!!
Turns out mine are 100's which vastly increases the rim selection.
Between the tyre guy saying there is a limited selection for Fiesta's because of the 108 stud pattern, and a post on this site where one member changed his hubs to Mazda 2 hubs (108 to 100's) I thought the stud patterns would be all the same at 108 for all Fiesta's.
Cheers.