29(1)The general rule is that no discovery assessment may be made more than 4 years after the end of the accounting period to which it relates.U.K.
(2)A discovery assessment in a case involving a loss of tax brought about carelessly by a member of the group (or a person acting on their behalf) may be made at any time not more than 6 years after the end of the accounting period to which it relates.
(3)A discovery assessment in a case involving a loss of tax brought about deliberately by a member of the group (or a person acting on their behalf) may be made at any time not more than 20 years after the end of the accounting period to which it relates.
(4)A discovery assessment in a case involving a loss of tax brought about as a result of a failure of a filing member to register with HMRC under paragraph 6 may be made at any time not more than 20 years after the end of the accounting period to which it relates.