You'll have your own tax responsibilities when you're in employment. These are different if, for example, you're:
- self employed
- an employee (with PAYE deducted from your pay)
- self employed, but also work for an employer
- working part time but run a business.
If you are an employee working for an employer, then they'll manage tax and deductions for you.
It's different if you're self employed. You'll be responsible for your own tax.