Our garden fence is in the wrong place, can I claim back a lost metre?

I've checked the plan on the title deeds and I am certain that the fence has been erected one meter over where the boundary should be - but our neighbour won't move it.

Our garden fence is in the wrong place, can I claim back a lost metre?
I've checked the plan on the title deeds and I am certain that the fence has been erected one meter over where the boundary should be - but our neighbour won't move it.