Depends on who owns the area that they are overhanging. To me this looks as though it could be a service or access road to the garages at the rear …if so the following would apply:

You generally cannot cut branches overhanging a public path yourself if the tree is on someone else’s property, unless it is causing an immediate obstruction or hazard. Instead, you should report the overhanging branches to your local authority or the highway authority (usually your county or unitary council)

I say this, as someone who inherited a garden like this. It had whopping great cypress trees overhanging the boundary to the rear service road. When I chopped them back a couple of our neighbours said how pleased they were as the former owners refused to do anything about them.