The National Lottery operator Camelot has enforced the rules making 18 the minimum age to play National Lottery games.
Last December, the government has announced that the minimum age for playing the National Lottery will be raised from 16 to 18 from October 2021.
Camelot has made the change on 22 April in order to make sure that the retailers are fully prepared ahead of the legislation change.
Now on, only customers who are 18 or above will be able to purchase any National Lottery products in store, online and on the app.
Shop staff are expected to check ID to ensure any players who look younger are of the correct age.
Players aged 16 or 17 would be able to claim a prize, during the relevant claim period, on a valid National Lottery ticket purchased before 22 April.
The regulatory changes in October would also see the minimum age of sales assistants who sell the National Lottery products also raise from 16 to 18.
However, the government is currently considering responses to a recent consultation on this issue.
Both the ACS and the NFRN have urged the government to allow sales assistants under 18 to continue selling the National Lottery products when new restrictions take effect.