Here's an example of the sort of letter you might write to your MP about the bill to legalise assisted suicide.
MP
House of Commons
London SW1A 0AA
Dear
I am contacting you regarding Rob Marris MP’s Private Member’s Bill on Assisted Dying which is due to have its second reading in the House of Commons on Friday 11th September.
If passed, this Bill will have a profoundly negative impact on some of the most vulnerable people in our society.
As my Member of Parliament, I hope that you will attend the debate and vote against the Bill at its second reading.
I would be very grateful if you could let me how you intend to vote on this important matter and how you have taken my views into account.
I look forward to hearing from you in due course.
Yours sincerely