Re: Google Maps/Streetview - Westminister Bridge.
"Buy a map, learn to read it, plan your journey."
It's many years since I drove in London, but I did exactly that. (pre-satnav days anyway, so no choice). Not being a local, I chose what seemed like the most obvious and best route from NE outer London to SW outer London. It took most of the day to get there thanks to Vauxhall bridge and the surrounding routes being totally snowed under with barely moving traffic thanks to roadworks on the bridge.
I found out later there was a multi-year rolling programme to refurbish/resurface all the bridges and I'd picked the worst possible route. And no, the traffic news on the radio is fairy useless if you aren't a local because they almost always refer to local landmarks that I know F-all about.
Nowadays, my satnav would almost certainly have found a better route for me.