Yeah, I’m with Crab and ST on this 1 as an ATCO it seems pointless - not least when you see helicopters on SAR tasking in Gale Force conditions and hocering happily (or operating the North Sea Rigs etc)
Rules are rules......... and they have added tiltrotors into that as well now. (Obvs we get a lot of them!)
Bizarelly, when we operated the Helipad at the Farnborough Airshow we had heavy depatures off runway 24 with the 25 FATO converging on the runway with no worries (and aircraft parking/manouevring inbetween)