Traffic going in and out of the Port of Dover has been blocked by a large group of masked men.
Dozens of people, many face coverings, were seen walking in the middle of major roads and a roundabout near the port in Kent earlier on Saturday morning.
Videos circulating online show several protesters, dressed in black and wearing balaclavas, gathering in the area.
Kent Police told Sky News that officers were "aware of a protest currently taking place" and that they are talking to the demonstrators.
A spokesperson added: "Officers are in attendance and engaging with protesters."
The Port of Dover confirmed in a statement on X that the disruption is affecting "all routes" in and out, as well as around the town.
A spokesperson added: "Traffic going in and out of the port is stopped due to an ongoing public order incident.
"We are in contact with Kent Police to understand the situation.
"This situation is impacting our local community and our customers, so of course we are hoping for a swift resolution."
P&O Ferries, which operates out of the port, said: "Please be advised that access to the Port of Dover is currently restricted.
"If you miss your sailing, we will get you onto the next when you reach our check-in."
Mike Tapp, the Labour MP for Dover and Deal, criticised what he described as "idiots coming to Dover to cause disruption".
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In a post on Facebook, he said: "Park run cancelled and port access disrupted.
"I am fed up with idiots coming to Dover to cause disruption. I bet if you asked any one of those 'protesters' they wouldn't know small boat crossing are down by 40% and we are working hard to fix the mess.
"Go home, enjoy your weekend/get a job."
(c) Sky News 2026: Dozens of masked men stop traffic at Port of Dover as part of 'protest'
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