A Champagne price war looks set to break out pre-Christmas, with Lidl the first supermarket to make a sub-£10 offer.

The German discount chain has Comte de Brismand Brut on sale at £9.99, with The Co-op not far behind with Veuve Monnier Brut NV at £12 while Booths has Anais Berry Brut NV on half price at £12.99.

Tesco’s Francois Dubois Brut NV is half price at £14.50, and Marks & Spencer’s popular Oudinot Brut NV is down £5 to £14.99.

Not to be outdone, Sainsbury’s has both Charles Lafitte Brut NV and Etienne Dumont Brut NV at half price, making them £14.99 and £14 respectively.

Booths is also offering a rash of Grande Marques at £10 off, along with both Lanson Gold Label Vintage 1998 and Heidsieck Silver Top Vintage 2002 at £24.99, down from £39.99.

It remains to be seen if any Grande Marques will be available at £10, but it’s a prospect that worries the Champagne Houses, usually so adept at controlling supply and demand and protecting their brand's reputation.