Swizzels Matlow, the maker of Love Hearts, Refreshers and Parma Violets sweets, is to scrap the use of artificial colourings in its products.

The company will switch to natural ingredients by the end of the year, according to the Daily Mail.

“We are proud to listen and react to the demands of the market and our consumers,” Andrew Matlow, communications director for Swizzels Matlow told the paper. “We celebrate our 80th anniversary this year and recognise that success comes from constantly evolving our products.”