Although, Mr Sunak said the annual vote would be "a matter of conscience" and a free vote for MPs, the idea has been lampooned by some of his backbenchers and condemned for being anti-freedom.

Source: https://www.express.co.uk/news/politics/1819760/Tory-conference-live-Rishi-Sunak-speech-today

In June 1989, a partially free vote handed victory to a government led by the Solidarity trade union and triggered a series of events culminating in the fall of the Berlin Wall that November.

Source: https://gazette.com/news/us-world/polish-opposition-supporters-seeking-change-mark-1989-solidarity-win/article_4f0e6a00-69ca-5586-a08d-6e78040be0cb.html

It will be a free vote for Conservative MPs, meaning party managers - known as whips - will not instruct them which way to vote.

Source: https://www.bbc.co.uk/news/uk-politics-65942837?at_medium=RSS&at_campaign=KARANGA

MPs will be given a free vote.

Source: https://www.mirror.co.uk/news/politics/breaking-boris-johnson-misled-parliament-30238822

Sunak said at the conference for his Conservative Party in Manchester on Wednesday that his MPs would be given a free vote on the new law.

Source: https://www.huffpost.com/entry/british-prime-minister-rishi-sunak-plan-to-gradually-ban-smoking_n_651d51c4e4b0521d3237544a