The director of the UK’s genetic surveillance programme said the coronavirus variant would likely "sweep the world".
Footage from Dover shows dozens of drivers surrounding officers as they face having to wait days to cross the Channel.
Transport secretary Grant Shapps says it could take days to test all drivers for Covid-19, with estimates of 8,000 lorries stuck in Kent.
With less than a fortnight to go before the end of the transition period, lorry drivers face huge delays on their way to the border.
Activists behind the stunt said police had "better things to be doing with their valuable time" ahead of potential traffic chaos post-Brexit.
The 42-year-old from Kent shot to fame with his 'The room next door' sketches.
Michael Gove confirmed truck drivers will be fined if they are heading to Dover or the Eurotunnel without a "Kent access permit".
Michael Gove laid out the "reasonable worst case scenario" and confirmed plans for a "Kent access permit" for lorry drivers entering the county.
Michael Gove has warned of 7,000 truck-long queues if hauliers fail to prepare for changes to custom rules.
Officials have freed up land which could be used for a Brexit lorry park – despite the Covid-19 testing shortage.