Charities should not collect used current postage stamps unless they are sure they are being passed on to collectors.
On 30 November 2018, the Charity Commission said that many used stamps are then prepared for reuse as original stamps. Participating in such schemes is fraud.
Ordinary postage stamps that have been used have negligible value to collectors. Genuine stamp dealers have their own sources and do not buy stamps from charities. [18.12]