If you live in England and are aged 16 or over, you can get a COVID-19 vaccine from a walk-in COVID-19 vaccination site without an appointment.

You do not need to be registered with a GP or bring any ID. It might help to bring your NHS number, if you know it.

If you've already had your 1st dose, you need to wait 8 weeks before having your 2nd dose.

See:  https://www.nhs.uk/service-search/find-a-walk-in-coronavirus-covid-19-vaccination-site

Note; you NEED to  attend those sites that say they can jab those 16+ years.