Solved:
So I went took the car for a drive to get it hot and when it started making the noise I had a look around. I pressed my finger on the two left side coil packs and one of them was vibrating as it made the noise. Took coil off and found spark plug was loose. When changed plugs I mustn't have tightened it enough as Im always scared of over tightening. Nice easy fix. Sure easier fix than over tightening it.
On my ratchet I counted 36 clicks until it goes around 360 degrees so from now on I tighten plugs around 24 clicks therefore around a 2/3 turn.