In fact seven supermarket champagne won gold medals, with three costing under £20 per bottle.
The winners - under £20
The Co-operative non-vintage Les Pionniers Champagne (£19.99)
Waitrose Brut NV (£19.99)
Asda's Extra Special Premier Cru Champagne NV (£19.97)
The winners - over £20
Sainsbury's Blanc de Noirs Champagne NV (£21.99)
Sainsbury's Taste the Difference Vintage Champagne 2005 (£25.99)
The Co-operative Les Pionniers Vintage Champagne 2004 (£25.99)
Marks and Spencer Herbert Beaufort NV (£32.00).
What makes a good champagne?
The AOL Money team decided to find out what all the fuss was about and asked champagne connoisseur and writer Richard Juhlin what makes a good champagne. "For me, a champagne educated and demanding man, I look for other things. Such as balance, elegance, depth and aromatic complexity.
"My favourites can represent different styles but thus criteria mentioned should always be fulfilled. It can be flowery, fruity, gamey, toasted, light or full-bodied, but always reflecting the chalky terroir and have a balanced, elegant and multi-dimensional taste."