Long Lost Ex Uncle

This is a photo of an old photo of my brother and I with our favourite Uncle back in the 70's.

I lost touch with him when we left Scotland for South Africa, then my Aunt and him divorced, but I never stopped wondering about him and every now and again, I go online to see if I can find him, and today I think I have, have sent an email through and I'm waiting for a response, although he may not actually want to get reconnected, so not getting too excited yet.