Morrisons sales are up thanks to ‘best ever Halloween’

Mr Potts said: “Our like-for-like sales have now been positive for a year, which is thanks to the hard work and dedication of the whole Morrisons team.

“There is a lot more we plan to do. We will keep investing in becoming more competitive and improving the shopping trip, and I am confident we will serve our customers even better during the important trading period ahead.”

Morrisons flagged that food prices continued to fall during the quarter, with deflation of 1 per cent.

All of the so-called big four supermarkets – Tesco, Asda, Sainsbury’s and Morrisons – have been cutting prices in a bid to better compete with German discounters Aldi and Lidl, who have eroded their market share.

Total sales in the quarter were down 1.2 per cent because of supermarket closures and the sale of the M Local convenience store chain.

Last week, Morrisons hit the headlines after it jacked up the price of Marmite by 12.5 per cent, weeks after a public spat between Tesco and Unilever erupted over the love-it-or-hate-it spread.

The move meant Morrisons became the first supermarket to raise prices of Marmite in the face of rising costs linked to the collapse in the value of the pound since the EU referendum.