“an Officer of the Board or the Board discover… that any income which ought to have been assessed to income tax ….(has) not been assessed.Section 29 (3) Taxes Management Act 1970 prevents HMRC making a discovery assessment unless one of two conditions are fulfilled. These are the taxpayer or person acting on his behalf has been negligent (Section 29 (4)): or the information that has been discovered was made available to HMRC before the enquiry window had closed or a closure notice had been issued (section 29 (5)). Negligence was defined in Blyth v The Company of Proprietors of the Birmingham Waterworks [1856] EWHC Exch J65 “Negligence is the omission to do something which a reasonable man, guided upon these considerations which ordinarily regulate the conduct of human affairs, would do, or doing something which a prudent and reasonable man would not do. The defendants might be liable for negligence, if, unintentionally, they omitted to do that which a reasonable person would have done, or did that which a person taking reasonable precautions would not have done.”
“The terms of the appointment of sub postmaster do not entitle the holder to be paid sick or annual leave, pension or compensation for loss of office”