Comment by alkonaut

The interesting question is perhaps did the UK ever consider switching like e.g. Sweden did when they realized driving on the right was becoming the norm in the region? Being an island, the biggest reason would perhaps be that it was always going to be driving mostly European built cars from Germany, France etc, some of which will be models that aren't even sold to e.g. Japan, India or Australia, so the UK would risk being the sole market for some models' in right hand steering