Interestingly, which side the brake levers are on stems from which side of the road we drive on. The rear brake generally is the favoured one for single handed operation and you can do all hand signals as per the UK highway code with your right hand as a car driver would only have that option. I do wonder how many would understand a left turn signal with my right arm in this day and age where even using car indicators seems to have become a thing of the past.

Interesting that the Italians favoured the British arrangement.