I've had that too and it was my first thought ... and was eliminated just as quickly which was a pity as it's an easy fix.

The ride to work this morning had the noise become even more frequent. Fortunately, this also means I have some more information.

It's related to pedal pressure. I don't have to be turning the cranks as I can get a quick 'click' if I stand when coasting ... but only the once, jumping up and down on the cranks won't do it after the first click/creak. It'll also do it as I stop pedalling - pedal rises to the top, I stop pedalling and 'click'. This leads me to suspect it's cranks or bb and seeing you have to take the cranks off to get to the bb, I guess I'll be looking at both.

Are these modern bbs serviceable in any way? Some grease? Throw it under a train?

Richard