Don't take this as fact as laws may have changed. But...it is legal to drink alcohol if with family and it's part of a meal.
You can enter a pub at the age of 14 if accompanied by parents and you are eating a meal.
You can't approach the bar until you are 16. And even then you can only buy non alcoholic drinks.
At 18 you can approach the bar and buy alcohol.
Clubs tend to have their own rules.
Many nightclubs for example might have a 21+ entry policy.
Private social clubs again have similar rules although things like Servicemens clubs will often allow youngsters in certain areas.

for the time being.

[c=#003BB2]16. For drinking booze but I believe they had raised it to 17. Can't care less though since I'm well over legal age now xD[/c]

It used to be 16 for regular alcoholic drinks and 18 for strong liquor. Since a few years it's 18 for all.

21. But legal guardians are allowed to serve their kids at a younger age.

peppermint here in the uk it is eighteen

5 at home, but 18 if you want to buy it or drink in a pub

18 in the UK. Very sensible we are here.

21 in the US

I don't know

18

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18

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21