EM4621 | Penalties: Failure to Make a Return - All Years: Non Receipt of Return
From HM Revenue & Customs · Enquiry Manual
If the taxpayer denies having received a return (strictly, a notice to make a return), you will need to examine the claim carefully. If you have any doubts about the validity of the claim you should ask for evidence in support, such as trouble with postal deliveries, changes of address, absences abroad etc. If you are satisfied with the claim you should issue a new return form showing a fresh date of issue.
If you are not satisfied with the claim because
other correspondence connected with a return has been ignored
reminders and fixed penalty notices have been issued and not returned RLS
there have been previous claims to non-receipt or a history of delay and non-compliance
the agents regularly claim non-receipt on behalf of their clients etc,
you should explain to the taxpayer that your records show that a return form was correctly served and give the date on which it was issued. You should then issue another return form marked ‘duplicate’ EM4622 and showing the same date of issue as the original.