A SIREN ringing out from an automatic weapons factory facility prompted intrigue this morning.

The so-called 'lightning siren' at AWE in Aldermaston rang out intermittently between 9.45am and 10.30am.

AWE - Atomic Weapons Establishment - is responsible for maintaining the United Kingdom's nuclear warhead stockpile.

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The facility - nestled between Reading and Basingstoke - provides government research, design and manufacture warheads.

The secretive site handles high explosives and radioactive substances under "carefully controlled conditions", according to its website.

Reading Chronicle:

And that might be why residents were a little spooked this morning to hear sirens ringing out.

Burghfield Community page said the siren was a 'lightning' alarm to warn of incoming stormy weather.

AWE has been contacted for comment.

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One woman replied:"Thank god that's all it is - I was about to get tooled up in my radiation suit."

Another added: "Glad to hear this - wasn't expecting the thunder just as I'd finished hanging the washing out."