Removing Agent from Personal Tax Account/Self Assessment

Hi I am trying to find out how I can remove any agent authorisations from both my personal tax account and self assessment. I no longer have an agent as they are no longer operating and undertake everything myself so do not want any agents listed. I have removed them from the 'Agent Details' in the About You section of 'Your HMRC services'. However I understand this does not necessarily revoke any access they may have and stop mail being sent to them. Any information on how I can ensure that that they are fully removed from both personal tax and self assessment would be much appreciated.

Hi Steve,

If you contact us by webchat we can ensure they are removed Self Assessment: general enquiries.

Thank you.