I was about 9 or 10
In the late 70's and was spending a week with my older brother and his wife just outside Bracknell. These were the days were you were allowed to leave a kid on his own in the summer holidays, so they were both out to work.
Terrified the life out of me, thought that this was it for the end of the world. Turns out they tested it every other Monday. It was the siren to warn everyone of escaped patients from Broadmoor.
(, Sun 26 Aug 2012, 14:44, Reply)