Can't speak for the rest, but London Stansted have an Essex police officer liaison officer to co-ordinate evidence of these 'attacks' between Police and CAA. Now that the big stuff is being targeted the CAA has become serious about this menace.
Police aviation has put up with this for years with offenders given a 'Caution' if admitting the offence. We are always a good target due to the mission profile of flying from A to B, hover at B for some time (often over large local authority estates during darkness) at around 1000', giving the local laser enthusiasts plenty of time to take aim. Not a lot more we can do about it that we're not already doing.