Condolences about your sister, that's bad luck.

However, Sunak, like yourself haven't thought it through. The theory is good, but it is a doomed project. Smoking is almost always started under the age of 18. Raising the minimum age merely makes it more appealing to the young. As it stands, underage smokers generally get to smoke government approved cigarettes/tobacco. Once the ability to do that is removed, the black market will fill the void, with the associated reduction of regulations.

I am an ex-smoker and cannot stand to be near somebody smoking or in a room where smokers have been. Especially on rainy days.