Thanks for that. I'd no idea such information was available, being a novice at family research. Strangely, my mother never talked about her childhood. We must have walked past the house she grew up in many times - it's still there - yet she never pointed it out to me.
My mother, Jean Allinson (or Allison) was born in England in 1929. A search on ancestry.co.uk finds nothing until her second marriage, to my father, in 1963. Can someone advise me how I might locate her birth record and anything else likely to be available?