An interesting opinion piece published on the Thames21 website by Theo Thomas in which he discusses the need for Sustainable Urban Drainage Systems (SUDS) and how they can be retrofitted giving us more environmental areas, cleaner rivers and reducing the risk of flooding.
Sadly he makes the point that laws on the requirement for paving of drives to require water permeable surfaces is not being applied. We see this in Bexley too and also the Council doesn’t seem to be enforcing the requirement for SUDS to be applied at new developments.
http://www.thames21.org.uk/2014/07/piecing-our-rivers-back-together/