New post-Brexit rules could “cause serious biosecurity risks”, MPs have warned.

Under the new post-Brexit system, dubbed the Border Target Operating Model, health checks on foods arriving at Dover will be carried out 22 miles from there at a facility in Sevington, near Ashford.

The long-delayed new rules, coming into force tomorrow, are part of the government’s introduction of a series of checks this year.

But fears have been expressed about disruption to supply chains, with MPs saying the new border regime could present risks to the UK.

On the eve of the arrangements, the Environment, Food and Rural Affairs Committee wrote to Secretary of State Steve Barclay to express unease about some of the preparations the Government has made.

Goods from Britain have faced similar controls from the EU since it left the bloc’s single market at the start of 2021, but the UK has repeatedly put off checks in the other direction.

Writing to the Defra Secretary, committee chairman Sir Robert Goodwill said he was concerned over plans that would see departmental funding for spot checks on products of animal origin at Dover reduced by around 70%.

The Tory MP said: “We remain concerned about the location of the physical checks that will be undertaken for commercial loads.

“Your Department informed us that Sevington will provide a modern and purpose-built site for goods and live animals that arrive through both the Port of Dover and Eurotunnel.”

“Defra’s justification appears to be that it is located to support the smooth flow of goods out of both points of entry without disrupting traffic flows out of the Port of Dover.

“However, the inland border facility at Sevington will require vehicles to travel 22 miles unsupervised across Kent, presenting potentially serious biosecurity risks, but also compromising compliance.

“We understand that drivers will be under no obligation to go to Sevington, if asked to do so. As such, we have real and reasonable concerns about the geographic dislocation of the inland border facility from the point of entry.”

The Port of Dover authority has already been among those expressing concern about the plan, as well as the prospect of funding cuts.

Rules are set to be updated further in the months to come.

By April 30, medium-risk animal products from the EU will undergo documentary, identity and physical checks.

From October 31, safety and security declarations for EU imports will become mandatory, along with a more streamlined dataset for imports.