You have been informed!
Thanks Hold West ~ naturally, I wouldn't presume to question what your FAA Controllers' Handbook and the FAA AIP might permit on your side of the Pond.
However, the UK position is based on ICAO SARPS, specifically Annex 10 and as the UK hasn't filed a Difference (which presumably, the USA has...??) the aforementioned operating restriction still applies over here.
It's entirely possible that under SESAR II, all participating European states including the UK may move towards a common position similar to the US, and which will be promulgated via JAROPS (now EUOPS) but until that happens, rightly or wrongly, the UK
status quo remains as detailed in the UK AIP.