[4] Many areas which now form part of Greater London were formerly rural and agricultural outskirts and still bear names which indicate this past: Ealing Common, Lincoln's Inn Fields, Shepherd's Bush and Wormwood Scrubs, for example.[5] A 2005 agricultural census carried out by ADAS showed that 423 holdings were located in the London part of the metropolitan green belt, around 0.25% of the total number in Britain.The report stated that whilst farming was not a significant part of London's economy, it did have a vital role to play.[7] The report commented that livestock farming had decreased in recent years due to a lack of infrastructure (poor access to abattoirs and markets) and problems associated with being located close to the urban fringe (such as dogs).The next highest was a lack of capital, and both polls showed that the Common Agricultural Policy of the EU was perceived to be smallest obstacle towards furthering diversification.