Your original question implied that the company accounts are made up to 28 February each year (this is known as the accounting reference date).
The information now provided suggests the company's accounting reference date is 31 January each year. If this has been changed at Companies House, you must notify us so the company’s Corporation Tax record can be updated accordingly. You can find guidance on what to do if you started trading after your company was set up can be found on here:
Your limited company's first accounts and Company Tax Return