It seems the noise is related to the heater fan (the noise does not happen when the fan is off).
So I think it's got something to do with all the interior moving about under braking. I will have to start banging bits in the area!
Hi, I have a bit of a chirpy vibration sound when braking, it's not really loud, it seems as though it's coming from the passenger footwell.
Does anyone have any ideas?