Self-employed as a director form

Hello! When I registered for Self-assessment I received an email from HMRC saying "As you have indicated that you are a director you may not need to pay Class 2 National Insurance contributions. You will receive a form within the next 10 days. Please complete and return the form to allow us to consider this." I received this letter with the paper "Director's questionnaire" form but unfortunately lost it. Is it mandatory to return the completed form to HMRC? I am confused because I am completing all this data in my Self-assessment. If it's mandatory, how can I request to get the new form or where can I download it online? Thanks!

Hi ,
 

If you are a director of a limited company then you will not be self-employed. The form would have been issued by the National Insurance department. To check if it can be re-issued you can contact them at : National Insurance: general enquiries   . Thank you .