Laurence Fox and Piers Corbyn are holding demonstrations outside Wimbledon.
Today is the final day of this year's Wimbledon championship, with Novak Djokovic and Matteo Berrettini facing off against each other at the All England Club in west London.
The Government's chief scientific adviser Sir Patrick Vallance and NHS England's national medical director Professor Stephen Powis were in attendance to watch the showdown.
A handful of demonstrators gathered outside the venue holding placards decrying lockdowns, with a few bearing anti-vaccination messages.
Protesters walking alongside Mr Fox wore shirts saying 'No health passports'.
Demonstrators standing near Piers Corbyn, the brother of former Labour leader Jeremy Corbyn, held a sign saying: 'We demand scientific TV debate on Covid vax dangers especially to children'.
Laurence Fox leads anti-vax protest outside Wimbledon Championships Tennis Tournament Mens Final Day at All England Lawn Tennis and Croquet Club on July 11
Piers Corbyn is pictured outside Wimbledon today with demonstrators holding signs saying 'We demand scientific TV debate on Covid vax dangers especially to children'
Protesters holding signs stand outside Wimbledon today. One sign says: 'No jab or test passports! Take our freedoms back!'
Anti-vax protesters led by Piers Corbyn with loud hailers arrive at Wimbledon on Sunday
The protests come amid warnings that life is likely to be 'massively disrupted' by people being told to self-isolate as the number of coronavirus cases rises over the summer.
Professor Sir David Spiegelhalter said it would make sense to get the rules 'in proportion', as vaccines minister Nadhim Zahawi confirmed the Government was looking at ways to tweak the NHS Covid app.
There have been concerns that people are deleting or disabling the app amid a huge rise in exposure alerts sent to users in England telling them to isolate.
Representative body NHS Providers said a growing number of trusts had told them of their concerns in recent days about how self-isolation of staff is now 'significantly impacting their ability to deliver care'.
Downing Street said on Friday that ahead of Step 4 of restrictions being lifted, expected on July 19, officials were examining whether NHS staff could be freed of the obligation to self-isolate if 'pinged' by the Covid app.
Laurence Fox pictured at the Unite for Freedom protest march
Under current plans, people who are fully vaccinated will be able to forgo self-isolation even if the app detects they have been in contact with someone who has tested positive after August 16.
Hospitality chiefs have warned that the delay between restrictions being lifted and self-isolation rules being eased risks 'the summer being cancelled and vast swathes of the population unnecessarily confined to their homes'.
Sir David, a statistician from the University of Cambridge, said if people are vaccinated and then pinged by the app, it is
