After no progress, I am resurrecting this thread.
My father's birth certificate (November 1929) names his father as Archibald John Richardson, tea planter, residing at 9, Lymington Road, West Hampstead. My grandmother Joan Margo (nee Cordner-James) was at the same address. The 1930 Electoral Roll shows that this was her parents' home.
My father was born at 29 Cleveland Gardens, West Hampstead, but I omitted to check this on the electoral rolls before I ceased my anc**try subscription!
I haven't found a marriage anywhere in the UK. My grandmother Joan Margo Cordner-James travelled from Southampton to Cherbourg in 1929 (thank you, aghadowey!) so if there ever was a marriage it could have been on the continent.
Joan appears on electoral rolls from 1930 to 1939 and in 1945 living with her mother - Archibald is not living with her.
So, if Joan did marry Archibald, who was he and where did he go? In 1943 Joan Richardson married Winston Adair - had there been a divorce? Was Joan a bigamist? Had Archibald died?.
Excluding names where middle initials don't match there are seven deaths recorded on freebmd for Archibald Richardson between 1929 and 1943, but none are particularly convincing as they would all be 50 or over in 1929.
(Joan died in 1970, my father died in 1971 and his only sibling is also dead, so there are no family to ask.)
Can anyone suggest what I can do to move this search forward?