With the way the pound is behaving at the moment, it’s impressive that the Co-op can keep the price of this stunning frizz from Piper Heidsieck under £17. It’s a classy, toasty, mouth-filling bubbly with creamy bubbles, based on the red grapes, Pinot Noir and Pinot Meunier, but with 20% Chardonnay providing a citrus-edged tang of acidity. The best value Champagne in the country.