Had a NI bill

[admin]

Hi, registering for Self Assessment can take a little bit of time, they do things by post (gateway ID etc). Nowadays even if £1 is made is needs to be declared.

I dont have any knowledge on NI sorry but just wanted to make note that AW doesnt provide the HMRC with any information (unless they have been specifically told to, eg an investigation etc), so very unlikely in your case as you would already know if there was an on-going investigation.