Hi christian,
If you wish to continue trading you will need to re-register as self employed as the form you completed will stop class 2 and class 4 NIC contibutions being collected through your tax return. You could contact the NIC helpline on 0300 200 3500, for advice on NIC matters and 0300 200 3310 or contact our webchat facility at h
Contact HMRC, to ensure that your self assessment tax record is not made dormant.
Thank you.