INTM860780 - Employees of International Organisations: Treatment of pensions
»Ê¹ÚÌåÓýapp exemption from national tax accorded to the salaries and emoluments paid by international organisations does not normally extend to the pensions which those organisations pay to retired officials.
As a consequence, a pension payable by an international organisation to a former officer/official who is resident in the UK is taxable in accordance with the normal rules. »Ê¹ÚÌåÓýapp one exception to this rule are pensions payable by the European Union (see INTM860820).