All the staff were fully redundant the beginning of March as far as im aware. If Marshall's come back they would have to hire the staff back at great cost having just paid out massive redundancy payments. If they do come back i should think it would only be for a short period of time as Sir P will probably need a leg up in the running of the airport as i suspect he has little to no experience of how an airport/ATC runs even if he has a helicopter buisness. Once he's up and running and he can get the various licenses signed over to him i should think he will be looking for Marshall's to leave. Just speculation of course!