Here are some more tips:

1. Introduce yourself (a constituent, a voter, a mother, etc).

2. Tell them why you are writing and include the name of the relevant parliamentary bill (if applicable). Have a gander at The full list of Public and Private Bills to check if a bill is being put before parliament anytime soon. Keep each letter to one issue.

3. Use examples and statistics to support your position and/or a story of your personal experience.

4. Provide your contact information on both your letter and your envelope to receive a reply and to confirm you are a constituent.

5. Express your appreciation and ask for a reply.

6. Sign your letter.

Follow up with a phone call, a visit or another letter at the appropriate time. Often times you will receive a canned letter in response to your first letter. Send a second letter with a copy of your first letter and you will start getting attention and real responses!

Be persistent and amplify your efforts: Send a copy of your letter to the editor of a newspaper or magazine.

Spread the word: Consider holding a letter writing party to get other people involved.