Hi Everyone, IM looking for my paternal grandmother Janet M Johnson nee Downer she was born in 1935 in Lambeth and married Brian Johnson in 1956. My Dad Graham Johnson was born in 1959 in Windsor Berkshire and put up for adoption at 6 weeks old. We have all the papers but no idea how to find her ( Dad was told she was forced to give him up so hoping to find her before its too late )

Any help or advice or pointers would be very appreciated Thanks :-)