To be able to vote in those elections you must:
- live in London
- be a British, Republic of Ireland, Commonwealth or EU citizen
- be 18 years or over on 3rd May 2012
For more information and the relevant form, visit How to register to vote.
One thing to watch out for: although you can get the registration form and information online, the registration process isn’t all online. So don’t leave it until the last minute as you won’t be able to sneak in before the deadline by doing everything at your computer.