UK supermarkets saw worst Christmas since 2014

The great British Christmas pudding: Even for the Royal Family, mixing them - and eating - is tradition.

But sales of the readymade version of the Yuletide classic were down 16% over the last festive season.

It's one shock finding in new Kantar and Nielsen retail data, which shows UK supermarkets suffered their worst Christmas in five years.

All of the so-called Big Four - Tesco, Sainsbury's, Asda and Morrisons - saw sales decline.

Morrisons' revenues were down 1.7%, making it the worst performer.

Across the sector, sales in fact rose overall - by half a percent - but that's thanks to a bumper performance by discounters Aldi and Lidl.

Their combined market share at nearly 14% has tripled in a decade.

Aldi's sales, it says, were up over 8% over a four-week period.

The retail Grinch, say researchers, is the uncertainty that's dogged Britain's Brexit-bound economy in recent months, a period when wage growth weakened.

Other victims of the slowdown were turkeys.

Their sales: down 1%.

And sparkling wine: down 8% as Christmas retail, for some, went flat.