Currently, London’s public transportation in very expensive and not reliable.
You just need to compare it to Frankfurt or Paris.
Do not compare it to the likes of Tokyo. There, they are light years ahead of London.
The solution of those in charge in London is to extract astronomical fees from car users in the name of global warming and pollution decrease!
In other words, they do not have the know how in making public transportation reliable and reasonably priced, so it is cheaper than car transportation and better for the environment.