Your MP represents your local area in Parliament, campaigning on issues and debating and questioning government policy. Remember, though, that an MP is only as informed as their constituents make them. If your MP doesn’t have an accurate picture of local views, they can’t reflect them properly in Parliament.
So make sure they have no doubts about what you think. Find out who your local MP is and get in touch. Many MPs hold regular local ‘surgeries’, where you can visit them to discuss any issue you want. Those who don’t will have other means of communicating with their constituents.
Of course, the candidate you vote for to be your MP may not win. Nevertheless, the winner will still represent your constituency and everyone who lives there, and is there as your first point of contact for parliamentary concerns.