The infamous Vote Leave slogan quickly became a symbol of all that was wrong with the Brexit referendum campaign.
A decision to summon the Tory leadership frontrunner to court over his £350m Brexit claims was quashed last month.
Activist Marcus Ball had claimed Johnson had lied during the 2016 referendum campaign.
"When politicians lie democracy dies."
The private prosecution was launched after "misleading" claim that the UK sends £350 million a week to the EU.
"When politicians lie, enormous damage can befall everybody else."