British Air Raid Sirens (WWII/Cold War). Carter & Castle Castings and Gent's of Leicester sirens.

Audio of a Carter Castings siren followed by audio of a Gent's of Leicester siren.
Footage from-
London Can Take It (1940)
'Gas Masks For All' British Movietone Newsreel (1939)
If War Should Come (1939)
Threads (1984)

[@fayecox9401]

I always find that siren noise very chilling

[@Steve_Hunts96]

The audio of the 1st siren was taken from sirens used at the Portsmouth Port

[@JJ-ex7fw]

1st pic is in Old St Mellons Cardiff I think

[@noone-tj5lb]

how did you edit it?

[@sieandknsproductions3491]

I think Singapore also used this back then in 1942