Shop owners have expressed doubts that big retailers’ moves towards express delivery, such as Tesco Now, are a threat.

Following the news of Tesco Now launching in central London, which promises to deliver within the hour, Shandip Patel, who runs 12 Krystals Express stores in and around the capital, said he is already ahead of the competition.

“Logistically, it’s a lot more difficult for a multiple to deliver this service. We open 24 hours a day and nine out of 10 orders are between 11pm and 7am,” he said.

Sainsbury’s has already launched its one-hour Chop Chop service.