Thanks All.
I am trying to trace a possible half brother of my husband, with his permission. He is not so computer literate,
I will follow up on the adoption link, see if that helps, but without a name I cannot search BMD. I have tried on Scotlandspeople.gov.uk with no luck.
My husband doesn't even know who his father is, as his birth certificate is blank, so I can't even try that angle.
Will keep probing, maybe something will turn up eventually. We have his DNA in the system so hopefully we will one day get a match that will help.