I was at Elvington helping at the BAeA Aerobatics competition where there was a NOTAMed TRA in operation. I lost count after about ten, of the infringements of the area.
(H0921/09 NOTAMN
Q)EGTT/QWBLW/IV/M/W/000/045/5355N00059W002
A)EGTT B)0905010800 C)0905021900
D)0800-1900
E)AEROBATIC CONTEST WI 2NM 5355N 00059W (ELVINGTON, N YORKS)
AUS 09-05-0143/AS2
F)SFC G)4100FT AMSL)
"TRA"? I think not. It's a simple nav warning, and the airspace is there for all airspace users.