Hi Daz, scary that mate.
I suffer from ectopic beats on a daily basis, I had all the checks done a few years ago and the cardio didn't seem bothered so I try not to be.
Stress, caffeine, and oddly enough a bad night's sleep all contribute. Probably more factors I'm not aware of too.
Hows your weight now? I remember you saying you were roughly my height (6"3) but around 17st. I've just dropped down to 14st from 14 and half.
Weight has a huge impact on our health. Measure your waist, if its more than half your height then that's a bad health indicator.
In a way its nice to see it doesn't bother you too much, but not sure that's a good thing?
Keep well mate.