The government can hold public consultations on a range of issues. They may come in the form of online surveys, focus groups, public meetings, and more. To see all current UK Government public consultations, check out https://www.gov.uk/search/policy-papers-and-consultations
London has its own online community that was set up in July 2012 so that City Hall could hear from Londoners about big issues that matter to them - Talk London.
Take part in peaceful protest
The right to peaceful protest is a human right, but one that some people around the world are still fighting to have.
Get involved in community organising
You can get involved in community led action and local campaigns on issues that matter to you.