NHS staff and community champions from South-west London attended a thank you event at Westminster Abbey.
They were among GPs, pharmacists and other members of voluntary groups at Westminster Abbey on March 23.
The event took place just days after the NHS started to roll out its spring booster programme for people aged 75 and over and those who are immunosuppressed.
The NHS will invite people to arrange a jab through the national booking service when it is their turn.
It can be accessed online at nhs.uk/covidvaccine or by calling 119.
More than three million Covid-19 vaccinations have been delivered in South-west London.