Sales of wine, chocolate and convenience foods received a Valentine's Day boost in the past three months.

UK supermarket Sainsbury is struggling to keep up with supermarket rivals and discounters in a British grocery market under pressure from a Brexit-induced fall in the value of sterling.

Dunnes Stores has rivalled the German discounters for grocery sales growth over the last three months, with its customer vouchering campaign giving it a 6.3% annualised boost at the till.

Avonmore, Brennans and Denny are the top three leading brand purchases in the country, according to research from Kantar Worldpanel.

SuperValu is just marginally behind Tesco for sales in Ireland for December, January and February.