The victims, who range from a wedding photographer in Dorset to a high-end jewellery shop in Shoreditch, east London, faced demands for hundreds of pounds to "protect" or update Wikipedia pages about their businesses. A former Britain's Got Talent contestant was among dozens of individuals targeted.

Wikipedia has taken action against what it described as the "co-ordinated group" of fraudsters by blocking 381 accounts. An investigation had found that the accounts were controlled by Wikipedia users offering to change articles about companies and private individuals in exchange for payment.

In some cases, the requests for money amounted to blackmail, Wikipedia told The Independent.