Four passengers have received fines of more than $19000 each after omitting details from their travel history, trying to bypass the UK's newly established quarantine hotels.
On Monday the UK introduced quarantine for international arrivals, with England making a stay in an isolation facility mandatory for anyone having visited one of 33 high risk 'Red List' countries.
Birmingham's West Midlands Airport said that some passengers were attempting to hide details of their route from border police.
"By midday yesterday, on the first day of implementation, we have received six passengers who had declared travelling from a Red List country, who were taken to the quarantine hotel," the UK's Assistant Chief Constable Chris Todd told press.
"We also had four passengers who were identified as having travelled from a Red List country, that hadn't declared it."