Thanks all!
I found the Eastbourne Bertram too...followed him and found the marriage to Pickard (and no, he never divorced Edith tsk tsk!) and his death in 1960...however when I contacted the lady on Ancestry who had created him along with Pickard, she said that I had the wrong Bertram! She said her Bertram's father wasn't called Sydney, so I dropped it.
I think I may have inadvertently linked the 1960 death on Ancestry to the tree I made..I thought I had deleted that to save confusion but seems not, duh!
So I need to go back to this lady then and say look I think we DO share the same Bertram!?
ooh Treetotal - Bertie Cutts-Watson?! That's a new one....will investigate now thanks!