Hi
You say he was known as Bert.
He could be a Robert and not an Albert.
I made the mistake of automatically typing in the Christian name Robert in one of the papers instead of Albert. I always think of Bert's being Robert's because I knew a few Robert's that were Bert's.
Double barrel names are quite common in Wales, so don't rule out he was a Robert Robert's, unless you know for sure that he was an Albert.
Just to throw another scenario in too - it may be his middle name and not his Christian name. Both my own father and his brother have always gone by their middle names and in their pet form . They have never been known by their Christian names..( my hubby too- although he goes by his full middle name and not a pet form of his middle name unlike my father and uncle)
And another scenario - Bert could have been a pet form of his surname, for instance instead of shouting " Hey Roberts change that barrel" - " Hey Bert ,or Bertie change that barrel" ,sometimes names stick.
Many of male friends back in Wales were known by their surnames ( their nicknames came from their surnames)
So unless you know for sure his first Christian name is Albert, I am sorry to say but I think you may have some difficulty tracking him down in the BMDs.
Looking at your other posts , you say he was a barman and maybe died of a fall.
Your best bet is finding out the name of the pub that he worked at - you posted the name of what you think it maybe in one of your other posts.
You could also go through the obituaries in the local papers for that decade, which will take some time but may prove fruitful.
Is that the full photo and not a cropped photo? If it's cropped and there are other people in your photo - If you know who they are, maybe it would be easier to trace those and their descendants - one of them may know something.
Depending on how much you want to trace his death, you could also contact the local paper in Cornwall( in the particular area where he was living) and take out a small ad with his picture in it asking. If anbody has information. You could also do the same in the area that you think he is from.
I think he could possibly be in 40s in the picture, he still has quite a bit of hair on top. Hard to say if he's in his 40s or 50s - some people can look quite old in their mid to late 40s. He could be 45 ish ( he looks very similar to my child's headmaster who is in his late 40s .Maybe running my child's school made our headmaster age
)
Hopefully someone will recognise him.
Kind regards