Manufacturers have installed seatbelts since 1965 but it was not until January 31, 1983 that it was made the law for all drivers to buckle up. Seatbelts are estimated to save around 2000 lives each year.
To mark today's anniversary, the Government has made a selection of historic THINK! adverts available online. The campaign provides road safety advice to reduce road deaths.
Road Safety Minister Stephen Hammond said: "There are still some people who do not use a seatbelt. My message is simple: a seatbelt could save your life, and not wearing one is just not worth the risk."