Companies House will remind you that it is a criminal offence not to deliver an annual return or accounts on time and that the company and its directors could be prosecuted. This could mean the directors have a criminal record, a £5,000 fine for each document not filed on time and the company falling into statutory default.

Your company will have to pay a penalty charge if you file your accounts after the due date.

Time after the deadline Penalty (for private limited companies)
Up to 1 month £150
1 to 3 months £375
3 to 6 months £750
More than 6 months £1,500

Should you still fail to lodge your annual compliance, Companies House will send several threatening letters warning of removing the company from the register.

Ultimately the company will be removed from the register and if you want to keep the company you will have to pay a fee to have it restored.