This Christmas, postmen in Wigan are braving the freezing winter temperatures, and delivering the mail wearing shorts to raise money for childhood leukaemia research through Cancer Research UK's MyProjects.

World-renowned scientist Vaskar Saha was so impressed he joined them -- see how he's showing his support in this video. Join in and help us raise £50,000 to support childhood leukaemia this Christmas

Visit http://myprojects.cancerresearchuk.org/projects/leukaemia to support this research.