I'm not sure the middle classes are likely to be hit by ULEZ anyway - it hits vehicles older than a certain age, primarily - not many of those Chelsea Tractors are likely to fall foul of it. While I agree with ULEZ, I will admit it's quite regressive - the people with old/polluting vehicles are, in many cases, those least able to afford anything better and/or the charge. Public transport should be much better, but that's way beyond the scope of something the mayor can quickly impact.