All travel to both nations would be banned under the new rules, with Brits travelling home being forced to quarantine for ten days in Government-approved hotels costing up to £1,750 per person.
Around 1,000 people arrive from the US each day and 500 from Spain with both countries seeing local transmission of new variants that are of concern to the UK.
According to The Telegraph, the Department Of Transport met with health officials yesterday to discuss the latest data on the new variants.
A final decision will be made on whether to add the countries to the “red list” at the Cabinet Covid operations committee this week.
The travellers flew into a Birmingham Airport without declaring that they had visited one of the nations in the last ten days, West Midlands Police said.
Coronavirus : London during lockdown – In pictures
Rules came into force on Monday requiring UK and Irish nationals, and UK residents, returning to England from 33 countries to quarantine in a Government-approved hotel for ten days.
The listed countries are those deemed at high risk of coronavirus variants and includes all of South America, southern Africa, Portugal and the United Arab Emirates.