Tobacco smoking in the United Kingdom is prevalent among a sizeable, but constantly reducing minority of the population. Smoking is legally permitted, with certain conditions upon location arising from the bans enacted separately in England, Wales, Scotland and Northern Ireland. It has been argued that smoking in the UK puts considerable strain upon the National Health Service (NHS) due to the health problems which can be directly linked with smoking. Successive UK Governments have endeavoured to reduce the prevalence of smoking. As part of this commitment, the NHS currently offers free help to smokers who want to stop smoking.
As recently as 1974, 45% of the British population smoked, but this was down to 30% by the early-1990s, 21% by 2010, and 19.3% by 2013; the lowest level for eighty years. An annual No Smoking Day has occurred in March since 1984.
In 2015, it was reported smoking rates in England had fallen to just 16.9%; a record low.
It has been estimated by Cancer Research UK that smoking is the single greatest cause of preventable illness and early death, with around 107,000 people dying in 2007 from smoking-related diseases including cancers in the UK. Around 86% of lung cancer deaths in the UK are caused by tobacco smoking and overall tobacco smoking is estimated to be responsible for more than a quarter of cancer deaths in the UK, around 43,000 deaths in 2007.
The British Medical Journal states that due to the drive to help smokers quit smoking, Britain has the world's largest reduction in the number of deaths from lung cancer. Previously in 1950, the UK had one of the highest rates in the world. The annual number of deaths from lung cancer in 2000 was half of what it was in 1965.
Reducing the prevalence of smoking to 5% could avoid nearly 100,000 new cases of smoking-related disease including 35,900 cancers over twenty years and save £67,000,000 a year in health and social care costs according to research commissioned by Cancer Research UK..
Until 1 October 2007 the minimum age to purchase and consume tobacco products in public was 16 years of age. From 1 October 2007 the Children and Young Persons (Sale of Tobacco etc.) Order 2007 became effective, raising the minimum purchase age to 18 years of age. There is no stated age under which it is illegal to consume tobacco, although an officer has the right to confiscate tobacco if the individual concerned is in a public place and under 16.