Third Universe

Tom wakes after an accident to find he has mislaid a load of years, his body and a whole planet.
In search of his lost love, he becomes the ultimate commuter, moving into a new universe, where 
the Second World War had gone on rather too long, and Scotland gained independence.

If that wasn't bad enough, another faction is determined to collapse the whole of creation.
A liberation force from the US, spoiling to try out some new kit, joins the fray, and goes for total 
annihilation. It's Tom's job to save the lot, aided only by a bunch of slaves and a bit of alien technology.
One of the problems with hopping between universes is that there is a faint chance you can meet 
yourself. That can’t happen of course, and so it does, exactly at the point where the whole fabric of space and time breaks down.