I grew up in Brighton which is full of cheesy bars like this. If you can handle being surrounded by multiple screens playing Kylie at full volume, its pretty much the cheapest bar in central london. The cliental is so varied its great for people watching and completely un pretentious.
I often stop when passing this artery of city traffic. The dwarfing structure casts shapes and shadows which can easily be missed when speeding in/out of the city.