By Milo Boyd Sir Rod Stewart nipped down to his local Tesco after signing a deal with the supermarket chain to stock his own brand of whisky. The rocker launched Wolfie’s last year in collaboration with Loch Lomond Distillery. The blended scotch at £35 a bottle will now be stocked by 400 Tesco stores across the UK. Popping in to a branch in Bishop’s Stortford , he said: “It’s wonderful to see Wolfie’s in pride of place here at Tesco.” Sir Rod said the name was inspired by his young hell-raising days with the Faces. He added: “I’m delighted to think it’s even easier for people to pick up a bott…