Since the Housing Act in 2004 planning authorities have granted many Gypsy and Traveller applications only temporary permission, on the grounds that  local authorities would identify and develop more suitable sites as a result of the Act. Most LAs haven’t done this so it is unclear what will happen when the temporary permissions are up.

“Traveller sites which currently have temporary consent are more likely to get permanent permission following a landmark decision, according to a planning chief.
John Koch, a boss in the development control team at South Cambridgeshire District Council, issued the warning as members said Gypsies, who set up camp illegally in Swavesey and were then given temporary authorisation, could stay for good.”
[no one has “set up camp illegally” – they have bought land and applied for retrospective planning and been granted temporary permission. No law has been broken]