down&out,
AEW = Airbourne Early Warning, ie AWACS type aircraft,
AAR = Air to Air Refuelling, I believe the RAF use VC10s & Tristars,
I would think the above would normally occur at higher altitudes, but I am sure someone will now correct me....
Jamming usually refers to radar, but also radio coms & GPS in this day & age, though I would expect that would have been mentioned specificly if it was likely to affect civil aviation.
Appears to be a general NOTAM as you would get for any major Military Exercise in the UK.
Regards, SD..