I've been a bit sad and was searching through planning applications for Wandsworth for John Deacons street. It does appear that the Deacons own 2 neighbouring houses on the same street. One of these houses was owned by Sue Lawley up until 1995.
I just remembered that Sue interviewed Brian May on Desert island discs in 2002. Small world? I don't think John got a mention in that interview...
FMBMJDRT