Which? said that some fake reviews could have serious real-world consequences. For example, one claimed that a Liverpool solicitor had helped them recover tens of thousands of pounds. If false, it could scam people in a vulnerable financial position, the group argued.
However, charity shops are better prepared this time, Mr Osterley said. Take for example Stockport hospice charity, Beechwood Cancer Care. There's been a queue of customers at its Heald Green precinct. But it is only open to shoppers, not droppers, this week.