I think its great that you are trying to make public areas less dominated by cars, vans, lorrys etc. You can see that the DVLA are certainly trying to cut down on traffic congestion in these types of areas recently, you can see here that more parking tickets are being issued by the DVLA more frequently.
http://www.dvla-contact-number.co.uk/dvla-clamps-cars-in-middle-of-the-night/