The Appropriation (2021/22 Supplementary Estimates) Bill seeks appropriation by Parliament of changes to appropriations and new appropriations for the 2021-22 year that the Government agreed to between April 2021, when the 2021-22 Estimates were finalised, and early April 2022. Spending against these appropriations has already been incurred under the authority of imprest supply Acts relating to 2021-22, but unless the spending is appropriated by Parliament before the end of the financial year, it becomes unauthorised expenditure, requiring validation by Parliament in an appropriation, confirmation, and validation bill—