What is your grandfather's first and last name? Do you know the year he was born and the year he married as well as the name of his wife?
Some libraries have old telephone directories. Maybe you could find one that would have a 1943 directory that would include the 68 Beverly Road, Whyteleafe, Surrey, England address.
Google search has:
search.ancestry.co.uk/search/db.aspx?dbid=1795
London, England, Electoral Registers, 1832-1965 .... which allows you to search them by name. The street address can be searched within the Location field.
Missing: whyteleafe
www.londonancestor.com/links.htm
Register Offices, Schools, Street Indexes, Transport, Wills ... of births, marriages and deaths for England and Wales; For records of birth, baptism, marriage, death and burial.... and preserving the experiences of different communities; Bethnal Green Tube Disaster 1943 .... Find an Address or Post Code; Street maps online
Missing: whyteleafe