10:00Malcolm BoydenWalter Allinson: The 78-year-old ping pong championBBC Radio Oxford Duration: 3 hours Wed 7th Aug 2013, 10:00 on BBC Radio OxfordSeventy-eight-year-old ping pong champion Walter Allinson from Shillingford joins us, and Johnny Ball on how to keep the grandchildren entertained this summer.GenresEntertainmentBrandMalcolm Boyden Source: BBC Online