Not being super familiar with the 1.4 twincharge engine im struggling to see exactly where you are with the camera in the engine bay. I know the supercharger and supercharger clutch assembly is up the back there somewhere and these are known to cause issues on these engines....so this is a possibility?
If you end up needing a mechanic in the Newcastle region, I can recommend Newcastle VW Centre @ Wickham or Twilight Automotive @ Cardiff. Both really competent and honest VW/Euro mechanics.
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