Fortnum & Mason has posted strong festive sales rises driven by its travel and ecommerce arms and against a backdrop of “financial uncertainty” for shoppers.

The department store chain recorded a 13% jump in like-for-like sales in the five weeks to December 31, driven by strong performances of its travel outlets and London Piccadilly branch.

The latter’s sale rise was driven by UK-based customers, with 77% of all sales from domestic shoppers.

Chief executive Ewan Venters said: “Of course we are pleased by the continuing growth across all channels but we take great pride in the fact that at a time when the high street is under pressure, our stores, restaurants, bars and quality products are being enjoyed by our domestic customers more than ever.”

Fortnum & Mason, which recorded its fifth consecutive year of double digital growth last month, posted a 23% leap in online sales during the period.

“In a climate of financial uncertainty, these are very encouraging results,” said Venters.

“Our excellent Christmas performance is a reflection of the focus we have on our customers and is testament to the enduring appeal of great products and service.”