Vast veggie: huge New Zealand potato weighing 7.9kg could claim world record

Colin and Donna Craig-Brown have named the 17.4lb tuber Doug and have been taking him for walks

A giant 7.9kg potato found in a New Zealand couple's overgrown garden may set a new world record for the largest of its kind ever to be discovered.

Colin and Donna Craig-Brown were doing a spot of weeding in their Hamilton back yard, when Colin's hoe hit something below the ground.