Thanks both, it is good to know that it is her as I have wondered for a while if there were any photos of her.
I case anyone is interested, here is a picture of the boys of the family, the older brothers of the girls in the first picture. I think this was taken before the girls were born, probably about 1933. My Grandad (1929-2011) is on the left. Sadly his brother Ronnie died in Belgium in January 1945, aged 20.
This is one of only 3 photos I have of my Grandad as a child and as far as I know, there are no photos of all 4 siblings together.