I've always been rubbish at planks, but this is for my grandson so the sore knees, sore shoulders and sore back will not stop me planking to say thank you to the amazing people at Great Ormond Street Hospital.

Every day, more than 750 seriously ill children and young people from across the UK arrive at GOSH. Every day, doctors and nurses battle the most complex illnesses and conditions and come together to achieve pioneering medical breakthroughs. Every day, they give hope to their patients and their families.

And that's worth a million planks.