To resign as a director at Companies House you can use the TM01 form. The quickest way is to use the online service to update your information.Directors are under no obligation to give prior notice of their resignation, whether such be in their own best interests or that of the company. You may use this form to terminate the appointment of a director. (individual or corporate). Your resignation letter should state your intention to resign and advise that you will be ceasing to act as a director at a specific date in the future. The board of directors). You can simply resign. This information is intended to acquaint employing agencies and candidates with a summary of selected aspects of Civil Service Laws and Rules. This form can be used to notify Companies House about the termination of a director's appointment.