The British Government’s Environment Agency introduced a new legislation, Sustainable Urban Drainage System or SUDS and came into force in 2008.

This legislation means that rainwater must not run-off the driveway, onto a public highway or directly into domestic drains and in order to achieve this, a driveway must be either permeable or have a well designed drainage system.

The  correct drainage is used on every job as they must be used and are laid on a bed of concrete and slotted into place. If installed at the entrance of a driveway they are enforced to take the weight of any car or vehicle.