So I have taken the car to work - only 5 miles - and the slightly rubbing brake drum is slightly warmer - but not too hot to touch so there is no smell.
But, the smell is present - if only very slightly - and is under the bonnet at the back of the engine.
The clutch did not slip - I tried full throttle up some "hills" (it is Suffolk!) and no detectable slippage.
I did check the clutch fluid again and it looks decidedly dark (it was the brake fluid that was nice and clear) - I can change that easily I guess, but would it cause the issue?
Luckily the journey home will be much longer (!) so I can get it up to temperature and have a probe.
Sod's law at play here methinks - it's been driving perfectly all summer....
