So I checked all cables on battery and alternator and they 'look' ok but few of the copper earth cables from battery to inner wing look a bit green at the fixing point in the wing.

I was having a play this morning and at idle if I turn side or headlight on, fog lights on, rear heated window all on their own the lights would dim/flickers as well.
Could that be something to do with the alternator or earthing from the battery?