Flash22. Thanks for the details. Unfortunately it is the bit that the tail gate actually latches into that is broken. It bolts to the top edge of the boot lip with 2 10mm bolts. I would take it to the local scrap yard but my daughter is away back to uni with it!
I have had a look but can’t see any that look the same. I need to investigate further and hope the bodge I did on it holds in the meantime.