From 3 April 2017 you need a permit to use any of Croydon’s three Household Reuse and Recycling Centres (HRRCs). The Council has introduced the scheme to reduce waiting times at the sites and to ensure that only Croydon residents use the sites. a
The permits are free. In order to get a permit you need to bring along two pieces of ID from a list of acceptable documents, one being photo ID.
See the council website for full details, here.