London Borough of Croydon has carried out an extensive search of land within the borough to try to find somewhere suitable for burial. The attached report (with appendices) was commissioned in 2010 and the list of available sites was gradually whittled down based on suitability criteria.
GEO Report Site Locations
Burial Land Need and Provision Study September 2010
Nathaniel Lichfield Appendices
(Please not this is a very large file and make take a moment or two to download)