Every Saturday morning hundreds of people head to the Racecourse in Northampton to run, jog or walk the 5km that make up the town's parkrun.

But none have shown more commitment to the cause then 83-year-old Bob Emmerson, who completed his 250th parkrun at the weekend.

Fellow joggers marked the occasion by baking him cakes, asking him to pose for selfies and cheering him every inch of the way.

I spoke to him after his run...