It’s been a while since I’ve been on here, been up in self isolation from COVID and came up with a few more locations!
(50.1511431, -5.0570429) Castle castings, Sounds off due to onsite emergencies e.g fire https://youtu.be/Twxr97q4hws
51°05'20"N 1°07'21"E Klaxon SO4
51°04'58"N 1°07'46"E Secomak GP8
53°46'42"N 2°41'10"W unknown (tests every Saturday 9:30AM)
51°40'23"N 4°41'36"W Klaxon SO4 (X2) can be heard in videos of life boats launched
(53.2283173, -1.6112992) Gent? Sounded recently for in remembrance of a terrorist attack but could be anything
52°29'35"N 1°24'05"W unknown, apparently could be heard about 3km away one day. (Tests every Wednesday morning)