Tesco says trading in the six weeks to Christmas was "strong".
The company said like-for-like sales, which strip out the impact of new stores, were up 2.2% at its UK supermarkets.
Sales at the wholesaler Booker, which Tesco bought in 2017, rose 6.7% over the six-week period.
Tesco's figures were released along with its third-quarter trading update. This showed sales up 1.9% for the period.