Sheffield mum here, although this is not at my children's school. This was also the story of the day on bbc radio Sheffield yesterday, I think it's a great idea, hope they role it out across all Sheffield school. My dds have learnt massage from my aunt and they are actually really good at it.
Some of the comments on the radio yesterday shocked me, one parent linked this to early sex education in schools! And the words disgusting and inapropriate touching were used. These are 5 and 6 year olds gently rubbing each others shoulders.