Cerberus also have access to a woodland site called The Outpost which is just off the A1 near Knaresborough in North Yorkshire. I've not encountered any safety issues, quite the opposite really, very comprehensive safety brief each time, active marshals who are not playing in the game. Only seen one instance of cheating or cheat calling and the marshals dealt with it swiftly and professionally, the people in question did not appear to be site regulars.
One area I agree with is the game rules could sometimes be clearer but that could be just me not listening properly.
It is also a paintball site so quite a few bases, helicopter, bridges etc and no footpath through the site. Running water, power, toilets etc and the included food that they seem to be known for.
I am not a member but have decided to join Cerberus as seem like a good bunch of lads and I felt well looked after. I have not attended The Works yet, not sure how long that site will be around as there is a planning application to convert it into an old folks home. It looks like they've had quite a few different sites over the years, as many will know, the urban sites tend to have a finite life span as the buildings eventually get re-purposed (I miss Clay Wheels Lane).
They are running an overnight MilSim event in a few weeks time at The Outpost.