Andrea and Hugh, thanks.
Dave is a semi wild(Feral) Tomcat who lives in my area, and is fed by my neighbour Julie! He is terrified of men, so we think he may have been mistreated by a man in the past, which is a shame.
Julie has taken the best part of four years to get him to get to trust her, presumedly the fact that she feeds him helps, but he won't go near her husband!
There is certainly a likeness to a Scottish wildcat others ha said maybe he has some Maine Coon in his ancestry.
Sadly the Scottish Wildcat is inter-breeding with Feral moggies and so the breed is being diluted at an alarming rate.