I assume (pre-reading) the House of Lords and English aristocrats gone mad are responsible.
These are the source of a lot of disasterous policy in the UK.
What? House of Lords has no legislative power – only the power of delay. If anything in recent years they’ve worked to frustrate the excesses of this Tory government (not that I necessarily approve of the Lords as an institution).
It’s got far more to do with a rabid right wing media and a Tory party that builds their election strategy on ‘culture war’ identity politics over actual policy.
But anyway, reality is that London and Paris have pretty similar levels of transit – working in transport, my opinion is that it’s internal transport links within other cities that need most investment and work.