Join Date: Aug 2014
Location: ZRH | LHR | SYD
Programs: LH HON, QF CL, SQ TPPS, AF Plat, VS Gold, VA Plat, EK Gold, HH Dia, WoH Explorer, Marriott Plat
Posts: 1,918
If you’re SEN they won’t bother you at LHR.
They’re excellent at pre-boarding Group 1.
Then Group 2 (which you should be as SEN) boards through a completely different side of the gate than the latter groups, so they’ll wave you through.
They do busily scrutinise groups 3 and above regarding their carry-on, but I think that’s more a mandate from LH Group than the gate staff getting their jollies.