Presumably it was meant literally, but the term "charity shop collector" seems to have some other meanings as well which are interesting to me as a non-UKian speaker:
- A provider of "a charity shop back-end as a service", which disposes of donations
received by charity shops.
e.g. https://live.ctrgroup.co.uk/third-sector/textiles-collection/
- A person who collects things purchased from charity shops.
e.g. "Harding is an avid charity shop collector, especially of sad and neglected
ceramic animals".
