Londis is calling on a further 350 of its members to install cash machines over the next two years.

Currently more than one in four Londis stores has a cash machine, but Londis trade marketing director Ross Halliday said: “Independent research shows that customers value a cash machine more highly in a c-store than a lottery terminal or post office.

“With a self-fill programme our retailers break even on less than five transactions a day. If they do 20 transactions a day, it could deliver around £11,000 a year extra profit and the payback would be under 11 months.”

Research from Harris International Marketing found that 23% of customers would use a store more often if it had a cash machine — and they spend an average of £27 a week in their local c-store, almost double the £14,50 spent by the average c-store shopper.