Macmillan Cancer Support was fined £14,000 for failing to follow data protection rules.
What they did
Macmillan Cancer Support wealth screened supporters in 2009 and 2014. In 2014, it wealth screened 2,188,508 supporters.
Macmillan Cancer Support has used this approach to try to find out information since 2009. It has not kept a record of the number of supporters affected, but it is estimated to be several hundred thousand.