'Dad gets a wave and a nod': how we greet now

Do you hug your colleagues, kiss your friends, squeeze your in-laws or just shake everyone’s hand? We decode the new rules for saying hello
Two or three times a week, I leave my young son with a childminder before taking my daughter to nursery. It used to be that, when first meeting the minder or the teacher who was about to take charge of them for the day, I’d grip their upper arm in greeting – a gesture by which I think I meant “Hello” and “Thank you”,