Car clubs also help. I believe each car club car is reckoned to get 5 cars off the road. They are a very practical solution for those who only use their car a few hours each week and for a very modest fee compared with driving your own car, you get to drive a decent modern car that is properly insured and well looked after. It comes with its own dedicated parking bay so parking isn't a problem. With all the money saved on tax, insurance, maintenance and depreciation, its even worth hiring the club car for short holidays. Google Streetcar for more information - there are quite a few based in SE23.