Depends. If you are under 18 then technically you are still under the control of your legal guardian and cannot leave without their permission.
any age all over the country
There is no age limit
16
42
There is no legal age limit in the UK, it is left up to the parents discretion. However they can be prosecuted for leaving a child home alone for an extended amount of time in detrimental conditions. For babysitting you just have to be over the legal employment age.
In the UK, the minimum age was 14 but this was raised to 15 in 1947.
18 1/2 in the UK
The Twilight Saga-New Moon is a certificate 12A in the UK.
legal age limit is changing to 17
The age of criminal responsibility is 8 in Scotland and 10 in the rest of the UK. This is the age at which children may be held responsible for their actions and charged with criminal offences.
There is no age limit anywhere in the UK, but leaving a child "improperly cared for" is against the law. Really, it depends on what your parents think suitable! If you want to watch your sibling, ask if you can try doing it for a couple hours to see if you like it. Good luck!
It depends on the country that you live in. In the USA their is no age limit to use an Airgun. However in most states you must be 18 to purchase one. in the UK you have to be with an adult until your 14