“We were tearing our hair out…Paul took up all the floorboards in the attic but it was getting silly” Jeanette Henry told the BBC, describing her husband’s home-wrecking search.

The couple from Frinton, Essex were “absolutely amazed” when they finally discovered where the bleep was coming from – a ten-year-old smoke alarm buried in a drawer occasionally making a sound to indicate a dying battery.

“We had to do something as we were getting desperate; we weren’t getting any sleep.” said Mrs Henry, whose husband tore down plaster walls. “We were tearing our hair out, we now had two gaping holes and there was still this blessed bleep.”