Must you be 13 to have a part time job?

Hi.If you go to your/a school, and ask for a work permet, they'll give you one and also an information pack.It will tell you were you can/cannot work so you'll get everything you need from there.There are about 20 different places were you cannot work because of the age, the younger you are the less amount of work there is for you.Any questions please email or send me a reply.Thanks