Operation Creative and the Infringing Websites List (IWL) were launched in 2013 to tackle the funding of illegal streaming websites.
Between January 2016 and January 2017, advertising from the UK’s top ad spending companies has dropped by 64 percent, based on research into the 205 websites contained on the IWL.
DCI Pete Ratcliffe, head of PIPCU, said: “This shows the great impact our work has on protecting the creative industries in the UK and across the world.”
“Operation Creative is about taking away the revenue that these criminals use to undermine one of the most important industries to the UK economy.”
He added: “In the coming year we will be stepping up our work in this area and these results not only show the great work of my team but also the great cooperation shown by brands and advertising agencies we work with.”
Jo Johnson, minister of state for universities, science, research and innovation, said: “Illegal streaming websites have a negative impact on the UK’s creative industries.”
“The advertising that appears on them is a misleading attempt to legitimise these criminal operations.”