Windyourneckin wrote
The only possibility is fis with limited traffic information due radar coverage, but this does not excuse controller ignorance
I beg to differ but you can give a full FIS irrespective of whether or not you have radar...
radar has nothing to do with FIS.
It's no wonder pilots get confused when controllers start to give traffic info when supplying FIS if it's done by the book - that's what a RIS is for... even under a RIS, collision avoidance is the pilots responsibility, and if the controller for some reason does not call certain traffic, it's still the pilots responsibility!
Many controllers will, if they have individual squawks available for FIS traffic abnd therefore have them identified and have maintained track identity, pass information on traffic which will be very close.... but only when they are quiet enough....
Chevron -
I would have thought that it was pointless to limit FIS even in the example you cite... FIS is a very basic service (as you know), telling A/C from leavesden "caution, x,y,z airport is active" or something similar would cover all that they would need to be told.
NorthSouth
The incident you mention has nothing to do with limiting RIS or RAS it's more to do with interpretation of responsibility under different radar services and even moreso to do with the lack of similarity between operating procedures of NATO military forces