Just as we sat down to eat our lunch the smoke alarm kept going off. We checked everywhere and no smoke or anything. We kept switching it off. It's connected to the electrics. The fire brigade fitted it. It went off six times. We tried to ring the non emergency fire brigade number but it wasn't manned so I bit the bullet and dialled 999. I did stipulate the problem and explained it wasn't a huge emergency but they arrived with the sirens blaring!
Turns out one of the firemen was one of my pupils from school. Wilf and I gave him a big hug. They were very sweet as I was embarrassed and they fitted a new alarm before they left.