A brave dog walker is warning others to be alert after he fought off a would-be mugger on Plymouth Hoe.Retired Keith Tarrant, aged 61, was approached by a stranger near Smeaton's Tower between 8.30pm and 8.45pm on Sunday."I heard him running up behind me," Mr Tarrant said."He came past me, said 'Alright mate' and I said 'Alright'."He went to carry on down the steps towards the Dome, and I turned left towards the Liner Lookout cafe."Then he came back up and started...
