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UK supermarkets saw their sales grow over the 12 week period to 24 March, except for Sainsbury's and Morrisons which both had slight sales drops, according to Kantar, publishing its latest sector report.
Aldi sales grew 10.6% with London its fastest growing region. More people are now visiting Aldi than Morrisons.
While Asda's sales grew only 0.1%, it has crept up to become Britain's second largest retailer.
Here's how market share now looks for the grocers:
- Tesco 27.4%
- Asda 15.4%
- Sainsbury's 15.3%
- Morrisons 10.3%
- Aldi 8%
- Co-op 6.1%
- Lidl 5.6%
- Waitrose 5%
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Ronny Gottschlich, the former head of Lidl in the UK, has been talking to Wake Up To Money.
He is warning that there could be higher food prices, sparked by higher wages, after Brexit if freedom of movement is restricted.
"The grocery retail sector in large parts of Britain is depending on foreign workforce and if this workforce isn't there any more you get quite a bit of pressure in the market where it is any where difficult to recruit for".
He expects the discounters such as Lidl to keep growing.
Lidl said that sales of its Deluxe Large Broadland Free Range Bronze Turkey were strong as was demand for its luxury mince pies and its brioche burger buns.
Christian Härtnagel, chief executive of Lidl UK, said: "In the context of a tough trading environment facing all grocery retailers, we are particularly pleased with the performance of our Deluxe premium range of products, which registered strong sales increases and proved a major draw for new and existing customers."