Unfortunately BRAVO1 this generation of Growers & Producers have not had Gov nor market support and have moved on to cheaper land in Europe.
Today, with population increase, easy motorway accesses & air supplies the G & Ps have found a better income in housing development. Govt legislate to councils increased housing; councils utilise their own green spaces then turn to brown field sites.
See numbers of foreign workers (cheapies) picking & plucking...they all want a share in this society.