How noisy is my house?

.....UK only, and not everywhere (areas covered Birkenhead, Blackpool, Bournemouth, Brighton, Bristol, Coventry, Hull, Leicester, Liverpool, London, Manchester, Nottingham, Portsmouth, Preston, Reading, Sheffield, Southampton, Southend, Teeside, The Potteries, Tyneside, West Midlands, West Yorkshire)

.....and it looks like I've got it relatively quiet (thought no-one came to check the decibel rating of the clockwork timer on the central heating, I suspect there might have been a purple splodge on the map if they had!) Check out whether it's time to buy a pair of industrial strength ear mufflers here