I have lived off of Dorchester Road all my life. Of course, I was overly interested in finding 43 Dorchester Road, which doesn't exist. But interestingly enough, 4343 Dorchester Road belongs to the infamous Chateau Exxxperience.
You can visit their website here: http://www.chateauexxxperience.com/
I have been here once. It is a very scary place full of porn and chocolate. And leery looking guys.