Did you follow up on any of the info (Registration numbers) I sent to you?
One easy way is to obtain the birth/marriage certificates from the GRO:
Registering life events : Directgov - Government, citizens and rights
[email protected]
Order birth, marriage and death certificates : Directgov - Government, citizens and rights
A copy costs around £9.25 and would provide the name of the parents and the address at the time of birth etc.
It is a great help in assisting in a search for other family members.
Depends how important your need to find the person is?