NIM70500 | Class 2 National Insurance contributions: general information: change of circumstances
From HM Revenue & Customs · National Insurance Manual
Regulations 87, 87A and 87AA of the Social Security (Contributions) Regulations 2001 (SI 2001 No. 1004)
The above regulations require contributors to
immediately notify HMRC if they became, or ceased to be, liable or entitled to pay Class 2 NICs on or before 5 April 2009.
immediately notify HMRC if they became, or ceased to be, liable or entitled to pay Class 2 NICs during the period 6 April 2009 to 5 April 2015.
notify HMRC if they commence, or cease, to be a self-employed earner from 6 April 2015.
Self-employed earners who fall within the Self Assessment regime and who fail to notify HMRC will be subject to notification penalties under Self Assessment.