Agree about the terminology... a better description of the area would have been helpful and would contribute better to conflict avoidance.
I was on an instrument detail yesterday via LAM into Southend, nearly 'dismissed' the "Brentwood" description on the Notam but was helped by Skydemon as this within seconds outlined the Notamed area, and made us realise we would be flying right through it on our way back up to Liverpool. A quick reroute in the Southend Cafe enabled us to steer clear and avoid the "Phone ATC when you land" message!!
UV - yes - the Grobs were waiting on the deck at Southend (pilots looking rather bored!) to go off and presumably be 'attacked'...