Enterprising members of the public have been doing this for years.
This chap for instance could be made an honorary member of the Bell Clan for adding Growth to the economy
From the Daily Record
"
Out of work printer produced £160,000 worth of FAKE £20 notes in Glasgow flat
TONY Howland, 35, was making the counterfeit money using ink jet printers and putting a water mark and thread on them similar to those on genuine notes.
Tony Howland, 35, was making the counterfeit money using ink jet printers and putting a water mark and thread on them similar to those on genuine notes.
Over two months he and co-accused Victor Robertson were responsible for producing £160,000 worth of fake £20 notes.
When police raided the flat at Queens Crescent,
Glasgow, they found notes, which were produced 12 to a sheet of paper, in various stages of production.
Police also found a printed note estimating it would take four days to print, glue, dry and cut £56,000 worth of the fake £20s.
Howland, an out-of-work printer and graphic designer, admitted counterfeiting notes and having the equipment and materials necessary to produce the fakes.
Robertson, 41, of Mavisbank Gardens, Glasgow, was convicted of being involved in the counterfeit operation by making and passing notes between July 18 and September 16, 2013.
Co-accused Stuart Trimble, of Tullis Street, Glasgow, had the counterfeiting charge against him found not proven.
Private Enterprise at it's most profitable.....the goodness was flowing
This is the only sort of thinking that will make Brexit successful.