An Instagram clip shows Kamil Majchrzak, who is Poland's number two, shaking hands with the boy, offering him a goodie bag, and presenting him with a new cap.
Coldplay, who are touring with their eco-friendly Music Of The Spheres world tour, say it's just not possible to get people to the concert and home again safely, due to the RMT Tube strike.
Pointing to how the test for prostate cancer, called PSA, is getting more accurate, Dermot Murnaghan said they should be offered in the same way screenings for other cancers are.