Thousands of Covid-19 jabs are being administered after stadiums and football grounds in London were transformed into mass vaccination centres.
Giant jab clinics have been set up at the Olympic Stadium, Stamford Bridge, Tottenham Hotspur FC, Charlton Athletic FC, Selhurst Park and Crystal Palace Athletics Centre.
Smaller events are also taking place in local community venues in a drive to vaccinate as many Londoners as possible.
Chelsea FC had 6,000 Pfizer vaccines to administer on Saturday, with the jab being offered to all adults over the age of 18 yet to receive a first dose, as well as those awaiting a second Pfizer dose.
Mr Khan said: “Chelsea FC, West Ham at the London Stadium, Tottenham Hotspur FC, Charlton Athletic FC, are hosting large-scale pop-up clinics, and there are a huge number of events taking place in local community centres, so that as many people as possible get convenient access to the life-saving Covid jabs.
“You do not need to be registered with a GP to get vaccinated.
“It is great news that more than eight million doses of the life-saving Covid-19 vaccine have been given to Londoners, and now all adults over the age of 18 are able to get the jab.
“We are seeing the big difference that the vaccine is making in our fight against the virus, so I strongly urge all adult Londoners to book their appointments or attend a walk-in centre as soon as possible, and to ensure you get your second dose.”
A huge queue was in place at the Olympic Stadium in Stratford, east London, as people got in line to get their jab.
Vaccines minister Nadhim Zahawi tweeted: “This is an incredible effort by the whole London team. Happening across the City at Spurs, Arsenal, Charlton and West Ham too. Come on London let’s get vaccinated!”