You can register to vote if you are aged 16 or over, although you need to be 18 to vote. You also need to be:
Register to Vote
Once you've applied you'll get a confirmation letter from Electoral Services to say that you're registered.
If your name, date of birth and national insurance number are not verified after you have applied to be registered, the Electoral Registration Office will contact you to clarify any element of their application or to ask you to provide documentary evidence, such as passport, to support their application.