Just a correction: historics are exempt the London Low Emission Zone (LEZ) but not the Congestion Charge or Ultra Low Emission Zone. (there are on-line vehicle checkers) The LEZ covers Greater London and is pretty much the whole of the inside of the M25. It doesn't apply to cars but catches a lot of Land Rovers because of the weight and tax class. I drove in the LEZ this week no problems, but the C-charge and ULEZ are another matter, they cover the same area but have different times (ULEZ is 24/7). The ULEZ looks set to be extended to the LEZ zone in 2021 which, if it goes ahead, will kill anything over a few years old.in any part of London. I think they have been able to pull off the ULEZ because there are few "normal" car owners in that zone (super rich don't care, everyone else just uses the tube) but that's not true of the planned expansion, it covers around 7m people, many nowhere near a tube, train or bus stop. I predict war. This could be a big vote issue, when Boris got in as Mayor he killed the extended C-change zone, it was just a tax in disguise. Expect Khan to get kicked out if he supports the ULEZ exstension as most people will have no option other than to drive and pay the charge.
I was living in Camden for a while, they brought in an "environmental charge" for residents to own a car "to cut carbon use". Where I was living the residents parking went from a 2 year waiting list to half empty, most people gave up owning a car. We were 5 mins from a tube and on a 24 hour bus route, but let's see how it goes in Bristol with no tube and limited buses. Already one own goal:
https://www.bbc.co.uk/news/uk-england-bristol-50613971
Get your hi-viz ready!