« Reply #2 on: Saturday 17 October 15 21:45 BST (UK) »
Your father's birth certificate is indeed probably the best way to go. I've had a quick look, and found your father's birth details.
John A Dannatt, mother's maiden name Richardson, Huddersfield, vol. 9a, pg. 838, Mar 1/4, 1941.
There doesn't appear to be a corresponding marriage entry for Dannatt and Richardson though.
Huddersfield in this case is a registration district; only the certificate will tell where exactly he was born.
I am Australian, from all the lands I come (my ancestors, at least!)
Pine/Pyne, Dowdeswell, Kempster, Sando/Sandoe/Sandow, Nancarrow, Hounslow, Youatt, Richardson, Jarmyn, Oxlade, Coad, Kelsey, Crampton, Lindner, Pittaway, and too many others to name.
Devon, Dorset, Gloucs, Cornwall, Warwickshire, Bucks, Oxfordshire, Wilts, Germany, Sweden, and of course London, to name a few.