Dunnes’ share of Irish grocery is continuing to slide, according to the latest figures from TNS.

The figures for the 12 months to the end of July put its share at 21.8%, down from 22.2% the previous year. In 2001 its share peaked at 23.5%. Dunnes’ big rival Tesco has improved its market position in the same period, with its share rising from 23.9% to 24.4%. Superquinn has slipped slightly, from 8.6% to 8.5%. The SuperValu chain shows a marginal improvement, from 19.3% to 19.4%, with Centra increasing from 2.6% to 3.2%.

But a spokeswoman for the Musgrave-operated groups claimed their combined market share was much higher, as the survey did not adequately reflect c-store sales.

However, discount chains Lidl and Aldi reported a significant advance, with their combined market share increasing from 4.2% to 5.4%.