Smoking in London is subject to strict regulations that have been in place since the 2007 nationwide ban on smoking in enclosed public spaces. You cannot smoke in any indoor public place, including pubs, restaurants, nightclubs, offices, or on any form of public transport (including the Tube, buses, and trains). This ban also extends to the platforms of railway stations and bus shelters. Furthermore, many major tourist areas, such as Trafalgar Square, Parliament Square, and several Royal Parks, have implemented "smoke-free" zones where smoking is strongly discouraged or restricted to specific corners. You are generally allowed to smoke in outdoor areas, such as on the sidewalk (pavement) or in designated "smoking gardens" provided by some pubs. However, you must be careful not to litter; London has a "zero-tolerance" policy for dropping cigarette butts, and enforcement officers can issue on-the-spot fines of £80 to £150 for littering. Regarding vaping, while it is not legally part of the 2007 ban, almost all businesses and the entire Transport for London network treat e-cigarettes the same as traditional tobacco, prohibiting their use indoors.