HMRC has updated its service availability issue stating that it is investigating the issue as a matter of urgency.

It has confirmed that ‘some customers are unable to amend, print or view their submitted 2015 to 2016 tax return. We are urgently investigating this issue. HMRC apologises for any inconvenience’.

At the same time, there appears to be a problem on the Government Gateway which is affecting brand new users to the system who have created an account. As a result, after creating the account, users are asked to log in immediately.

HMRC says: ‘We are aware that after creating a new Government Gateway account at our website, some users are being immediately asked to login with their new User ID. Please do login to complete your account details. We apologise for the inconvenience caused.’

To find out when the affected HMRC service is back up and running, go to HMRC service availability issues: self assessment