Thank you, great suggestion and I will certainly keep that link for future problems. Unfortunately they currently only have passenger side. I have found Jaguar have a classic parts section and hopefully I have bought the right part from there. I will probably have to paint it but at least it should fit.
Some hooligan smashed the backing (and glass) on the drivers wing mirror. What I thought would be simple to replace is proving impossible. Does anyone know where I can get a replacement backing? Its a 2006 X150 in black.