According to Official Guinness Records,
In March 2009, a group of British pensioners having an average age of 57, the oldest being 83 years old, pleaded guilty to counterfeiting charges and are expecting jail sentences. The British Serious and Organised Crime Agency said that the gang ran the counterfeiting operation like a professional business having a number of sites in London and Glasgow, UK, each of which could produce a finished batch of notes worth £800 ($1,600) in half an hour. Officers were able to recover more than £4.4 million worth of faked Euros and £600,000 worth of bogus £20 notes, bringing the total amount linked to the group over £5 million.
For a complete list of 2009 records, please visit 2009 Guinness Records in United Kingdom.