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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!