Ramadan and COVID-19 vaccination
The British Islamic Medical Association has issued a statement confirming that people should not delay having their Covid-19 vaccination as part of Ramadan. They are clear that injections administered for non-nutritional purposes whilst fasting do not invalidate the fast.
Read their advice here https://britishima.org/operation-vaccination/hub/statements/#FAST and please note they also advise that you should consult with your local mosque, scholars and healthcare professionals.
The Muslim Council of Britain has developed a number of resources to help Muslims observing Ramadan to stay safe and healthy; this includes advice on attending prayers and top tips for Eid celebrations https://mcb.org.uk/resources/coronavirus