Register to vote using the government's online service: https://www.gov.uk/register-to-vote
It is quick and easy to use, you need your address details and your National Insurance number. You can also update your proxy and postal vote preferences online. Printable forms are also available if you wish to register by post.
Request a postal vote
You may request a postal or proxy vote directly through the City of Westminster Council website: https://www.westminster.gov.uk/postal-and-proxy-voting