The highlight of today's visit to help the chatty Ms J wasn't the changing of the battery in her smoke alarm - albeit I was grateful for the step ladder she had to reach the unit in question - but her supplementary request to help get her doorbell working again.

She had a plug in unit that had stopped making a sound (a vital part of any functioning door bell...), and a complex instruction booklet. I discovered the unit has 55 different "tunes"...brilliant...and Ms J was keen to get the Cuckoo sound back as her tone of choice.

After manually scrolling through what felt like 54 of the 55 very tuneful options, we eventually found the Cuckoo - I ran downstairs to press the button and there was cooing to be heard from upstairs...