Ken Murphy, chief executive of the business, highlighted “unprecedented increases” in the cost of living for customers as he committed to further improving value for money.

It came as the UK’s biggest supermarket chain revealed that it continued to grow sales over the past quarter despite pressure on spending and tough comparisons against lockdown-boosted sales over the same period last year.

Tesco said that like-for-like group sales increased by 2 per cent to £13.6bn over the 13 weeks to March 28, compared with the same period last year.

The retailer said this represented a 9.9 per cent increase against pre-pandemic levels from 2019.

However, the firm’s UK operation said like-for-like sales dropped by 1.5 per cent against the same period a year ago.

Tesco added that it has grown its market share against key grocery rivals after driving investment into value-focused promotional campaigns.

Mr Murphy said: “Whilst the market environment remains incredibly challenging, our laser focus on value, as well as the daily dedication and hard work of our colleagues, has helped us to outperform the market.

“Although difficult to separate from the significant impact of lapping last year’s lockdowns, we are seeing some early indications of changing customer behaviour as a result of the inflationary environment.

Customers are facing unprecedented increases in the cost of living and it is therefore even more important that we work with our supplier partners to mitigate as much inflation as possible.”

Fuel sales soared by 44 per cent to £2bn as Tesco witnessed a surge in petrol and diesel prices.

Customer behaviour changing warns Tesco boss Ken Murphy as inflation puts pressure on households