If you have an HMD Mobile SIM as part of your subscription, it cannot be canceled independently of the whole subscription.
HMD Global Oy UK Branch, of 2 Kingdom Street, Level 2, London, Paddington Central, W2 6BD, registered in England and Wales under Company No FC033770, UK Establishment No BR018857, is authorised and regulated by the Financial Conduct Authority under firm reference No 949221.