Retention, inspection, and supply of spending returns
You must retain a copy of each election spending return and declaration, and any accompanying documents, for a period of two years beginning with the date when the return is delivered. During that period, they must make copies available for public inspection. Anyone can also request copies of the returns or declarations and any accompanying documents, which must be supplied on payment of the fee of 20p per page.1
You must remove the addresses of individuals who have made donations to candidates from all copies of statement of donations made available for inspection or supplied on request.
At the end of the two-year period if the candidate or the relevant election agent requests them, the returns, declaration and accompanying documents must be returned to the candidate. Otherwise they should be destroyed.