laws about drinking and buying

UK rules 

It is against the law:

• To sell alcohol to someone under 18 anywhere.
• For an adult to buy or attempt to buy alcohol on behalf of someone under 18. (Retailers can reserve the right to refuse the sale of alcohol to an adult if they’re accompanied by a child and think the alcohol is being bought for the child.)
• For someone under 18 to buy alcohol, attempt to buy alcohol or to be sold alcohol.
• For someone under 18 to drink alcohol in licensed premises, except where the child is 16 or 17 years old and accompanied by an adult. In this case it is legal for them to drink, but not buy, beer, wine and cider with a table meal.
• For an adult to buy alcohol for someone under 18 for consumption on licensed premises, except as above.
• To give children alcohol if they are under five.

It is not illegal:

• For someone over 18 to buy a child over 16 beer, wine or cider if they are eating a table meal together in licensed premises.
• For a child aged five to 16 to drink alcohol at home or on other private premises.

Norwegian laws 

The sale, serving or delivery of other alcoholic beverages to anyone under the age of 18 is not permitted. This also applies to low alcohol beverages, such as light beer.

You must have reached the age of 18 to purchase beer, wine, and other products with an alcoholic strength of less than 22% by volume.

The sale, serving or delivery of alcoholic beverages with a higher alcohol content than 22% by volume must not be made to anyone under 18 years of age.

20-year limit
You must have reached the age of 20 to purchase liquor or other 22-volume alcohol. percent or more.

The sale, serving or delivery of alcoholic beverages with 22% by volume of alcohol or more must not be made to anyone under 20 years of age.

The age limit of the seller or purchaser
20 years: Anyone selling or serving alcoholic beverages with 22% or more by volume of alcohol must be 20 years of age
18 years: anyone who sells or donates other alcoholic beverages must be 18 years of age
Exceptions: However, this does not apply to waiters with chef or waitress professional letters, or when selling beverages containing between 0.7 and 2.5% by volume of alcohol when a person over the age of 18 has daily supervision of the sale.