The company said the controversy over airport stores pocketing the VAT of the goods they sold had no impact on its results.
Group profit before tax climbed 8% to £121 million and the company hiked the final dividend by 13% to 39.4p.
It is also planning a share buyback of up to £50 million.
“Looking ahead, our focus will remain on profitable growth, cash generation, investing in new opportunities and evolving our customer proposition, all to ensure we are well positioned for the future,” said chief executive Stephen Clarke.
