Most people whose income is wholly dealt with by PAYE through one tax office will not need to complete a return. Employees earning above a specified amount will be sent a return to complete.
Unless there is a change in your personal circumstances, you do not need to worry.
You should keep your tax office informed about any changes that affect your tax position, however, so that the correct tax is deducted. Changes which could be relevant include:
You must tell the tax office if you receive any income which is not taxable. When you contact your tax office you need to tell them your tax reference and your national insurance number, both of which are on your tax coding notice.
Just One More Click: Doggy drama about staying safe online at work.