Hi I'm really disappointed the person I was researching turns out to be wrong - and as its my Grandfather really annoyed with myself!!

as now half of my tree is wrong!!!
I got his service papers back and it turns out he was born and married in India - can anyone help me find the details please??
Cyril Arthur Clarke born 18 June 1911 Kirkee Bombay Presidency India
Father English and Mother English so assuming they were in Army/Services??
he married Winifred Ann Smith on 29 April 1939 Bombay
If anyone could also tell me how I find the details to order the birth certs etc - would it have been registered in England??
Many thanks