Trying to Identify the bike my Gran used to have back in the 40's

[chaz]

Looks like it may be a twin or twinport twostroke as the exhaust looks to be in the barrel?  as the others have said might be a Raleigh, I was looking at a 250 twinport twostroke at the classic bike show? at Goole last Sunday.

You could spend a few hours on Google images looking?  you might find a match...... hand gear change.. lever.... etc. but there were dozens of bike makers back then, good look................