Despite all of the concerns about scam emails, HMRC is trialing new ways to contact taxpayers.
As part of these trials you may be contacted by SMS text message. You will be asked to telephone HMRC on Tel 0845 300 3900. This is the only number that HMRC will use for SMS text messages.
If you receive an SMS text message claiming to be from HMRC asking you to contact any number other than Tel 0845 300 3900, do not respond.