I spoke to my mother in law this morning and she told me that in 1950 an Aunt wrote to her foster mother looking to make contact. Her foster mother refused to show my mother in law the letter or tell my mother in law the name of this Aunt, so someone from the family DID try to make contact. It's a little bit more information to add to what I already have - that her mother or father had a sister

From information I gleaned today her father, Henry, was a soldier - she remembers him coming home on visits wearing his uniform. This means at least I can exclude searching Navy and RAF records.
She also remembers her mother "entertaining" other men while her father was away, so yes, there is a possibility that some of the children didn't have the same father. I know that her sister, Mary, was born sometime between 1938 and 1941 and remained in Brighton so she could have been born in Brighton rather than in Hastings like the rest of the children.
I am a lot further forward than I was thanks to the birth records I can now obtain
