Undercover.
Its not just ATCO's - its just about everyone. Over 90% of ATC delay can be attributed to NERC. We are chronically short of ATC staff. The systems need 'work' and management is, pretty much, crap!
As stated - we are shareholders and employees so we do have a say in the running of the company. We are also ATC professionals that do not like providing a bad service (but it is a safe one).
If a 15 minute strike is the way to get Blurrs attention then so be it.
If you don't like it then - well - get stuffed!