Lossie radar is open all year round. I can't remember if its Kinloss or lossie is a mil divert airport. So even at the weekend Lossie radar is operating. They just don't get involved with civ traffic.
The primary head is at Lossie.
The secondary head is at Kinloss.
They arn't providing a service during the week from the goodness of thier hearts. The only reason they identify you isn't for any service which will help you. Its so they can satisfy there operating requirments for launching and recovering aircraft into the CMATZ. If INV traffic wasn't near enough to stop them launching or recovering they really couldn't care what you do. As soon as you accept a service off lossie be ready to be on your toes. They will try and radar vector you in class G VFR which maybe into cloud. They will give you "not below xxxxft" which is a IFR clearance. The reason why they give you a turn for identification is because the secondary radar is tits up again at Kinloss and they are trying not to tell any one. And be ready to stick up for yourself and don't except a not above instruction which gets you 500ft off Saddle Hill just for W3D inbounds.
The primary radar is a heap and from various discussions on the RT is some what suspect in relation to geographic range from the danger areas. And the secondary radar is out more than they tell you.
The service from Lossie has its peaks and troughs depending where the controllers are in the training cycle and what attitude the controller has to civi aircraft. The peaks can be extremely impressive letting you do visual climb against's decending traffic which civi controllers can't do. The troughs can be sub sea levels of service with such a marked difference to normal civi controlling practises and RT that nobody has a clue what is going on.
"G-xxxx cancel IFR decending QNH 10XX"
"Rodger IFR flight plan cancel at xxxx"
"G-xxxx RAS turn heading 120 deg stop decent FL90"
As they refuse to band box UHF to VHF as Luchars do you don't have a clue how over worked they are or what mil traffic is doing. The fact that most mil pilots make a point of trying not to talk to them if they can help it, due to years of fighting doesn't help.
The whole thing is a political hand bags at dawn.