Jo Pavey (right) at the start of the Elite Women Race of the Virgin Money London Marathon, London. PRESS ASSOCIATION. Picture date: Sunday April 23, 2017. See PA story ATHLETICS Marathon. Photo credit should read: Adam Davy/PA Wire (Photo by Adam Davy/PA Images via Getty Images)
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PA Images Adam Davy - PA Images

Jo Pavey (right) at the start of the Elite Women Race of the Virgin Money London Marathon, London. PRESS ASSOCIATION. Picture date: Sunday April 23, 2017. See PA story ATHLETICS Marathon. Photo credit should read: Adam Davy/PA Wire (Photo by Adam Davy/PA Images via Getty Images)
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PA Images Adam Davy - PA Images

Fancy dress runners prepare for the start of the Virgin Money London Marathon, London. PRESS ASSOCIATION. Picture date: Sunday April 23, 2017. See PA story ATHLETICS Marathon. Photo credit should read: Adam Davy/PA Wire (Photo by Adam Davy/PA Images via Getty Images)
Getty Images

PA Images Adam Davy - PA Images