Its operating profit margin for the year to the end of September was 5.4%, up from 4.2% in the previous 12 months.
Overall, Europe's largest tour operator saw operating profits rise 4% to £490m, even though revenue fell 2% to £14.46 billion. Profit before tax was up 8% to £360 million.
Chief executive Peter Long said: "The year has been one of many successes.
"We have delivered record Group profits while the UK achieved outstanding results both in terms of profit and margin all against a backdrop of continued economic uncertainty.
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Consultez la source sur Veille info tourisme: TUI annonce des profits record au Royaume Uni