Marks & Spencer is to roll out a further 800 self-service checkouts across its clothing, homeware and food stores as part of a cost-cutting drive to tackle inflation.

The retailer said the addition of more unmanned till points, which are similar to those in supermarkets for groceries but can be used to pay for clothes, will help make its shops more efficient and contribute to its target of achieving £150m in cost savings this year.

M&S is grappling to offset an additional £50m in energy costs and a £100m increase in staff pay this year.

At some stores, around 70pc of food purchases take place either on self-service checkouts or through the retailer’s Scan and Shop mobile phone app.

M&S has recently been speeding up the introduction of these tills into clothing and homeware. In its latest financial year, it said store staffing costs were down overall, despite pay rises.