Domino's Pizza Group updated the market on its fourth quarter trading on Tuesday, reporting a 5.8% uptick in organic group system sales, with UK system sales up 6.0% and UK like-for-like sales up 4.5%. The FTSE 250 company, which holds the master franchise for Domino's Pizza in several European countries, said its saw its "busiest week ever" in the run-up to Christmas, and reported "strong" digital performance, with online sales up 10.8%. However, due to weaker sales progress outside the UK and Ireland, and business integration challenges in Norway, full-year underlying profit before tax was now expected to be at the lower end of the consensus range of £93.9m to £98.2m.