Aldi and Lidl have grabbed their largest-ever share of the grocery sales, with the German-owned traders accounting for a total of 12 per cent of the market.
This adds up to almost £1 in every £8 of the UK’s grocery spend being in one of the ‘big two’ discounters.
Of the ‘Big Four’, Morrisons performed most strongly, with year-on-year sales up 1.9 per cent.
Tesco still has the largest UK market share, at 27.4 per cent. Their recent business overhaul saw a 0.8 per cent increase in sales in the 12-week period, outperforming rivals Sainsbury whose sales were down 0.3 per cent, while Asda sales also declined, by 0.9 per cent.
Kettering NHS worker scoops £1m lottery jackpot just before finishing cancer treatment
Warrant issued for arrest of Corby woman Natasha Adams over alleged £34k theft
Man charged over firearm incident near Corby Urgent Care Centre
PICTURES: Here are six abandoned but adorable dogs looking for a forever home this week in Northamptonshire - including one big lad with a 'shoe fetish' 🐶
'It's been a blast': pub legend Malcolm the Fish Man retires
The research, by analysts Nielsen, found that Aldi’s sales grew 12 per cent year-on-year in the 12 weeks to February 25,
LIdl’s sales also rose, by 9.1 per cent over the same period.
Iceland also saw their sales on the increase with a rise of 5.6 per cent.
Overall, sales across the UK’s supermarkets rose by 1.1 per cent.