Online supermarket shoppers could soon be offered a "Buy British" button to filter out foreign produce as part of post-Brexit plans, MPs have said.

Under the scheme online grocery retailers would update their websites to let shoppers click to restrict the items they can see to UK-grown food only.

At present it can be difficult for online shoppers to find out where their food has been grown as they are relying on small on-screen images of items.

By contrast buying British food is far easier for in-store shoppers, who can look out for distinctive Union Jack logos on packs.

Yesterday in a Westminster debate the Environment Minister, George Eustice, revealed he has met with senior figures at the National Farmers' Union to discuss the possible labeling revolution.

The idea has been backed by MPs, who are now urging the Government to introduce a policy to encourage supermarkets to launch Buy British buttons, which they argue could provide a welcome boost for UK farmers once the UK leaves the EU.

Julian Sturdy, Conservative MP for York Outer, who led the debate, said: "I applaud that and I think it's an excellent idea, and I hope the minister certainly takes that point on board."