"Standard" you cheeky monkey! Yes Western Radar do work.
3773 is one of ours. We provide ATSOCAS from FL70 to FL195 [FL245 in an active TRA].....excluding controlled airspace as the ATSOCAS description suggests. Difficult to describe our area in a short sentence....but basically Anglesey to REXAM to Brize to Bournemouth to Jersey Zone boundary west of ORTAC then along UK FIR boundary to south of LND then across to Shannon boundary then up the boundary towards LIFFY [but not quite up to LIFFY] to Anglesey. We accommodate airtests as well as a selection of "regulars" for whom no controlled airspace option exists....such as Gloucester, Newquay or some Exeter routes.
Service provider is NATS [civilian staff].
***airsmiles: if there is no urgency why not dump over the sea.....and if you can't dump, use a lower level to burn it off a little quicker......and if possible you give the aircraft a massive block of airspace with no other traffic.