Sir Ed accused Mr Farage of wanting to transform Britain into a "Trump-inspired" nation, characterised by a dismantled NHS, reliance on fossil fuels, and a disregard for human rights.
In his keynote speech at the Lib Dem conference, he linked Mr Farage to figures such as Elon Musk, Vladimir Putin, and Donald Trump.
Reform UK has dismissed Sir Ed’s allegations regarding gun laws as "madness", saying that looser firearm rules are not current party policy.
As UKIP leader a decade ago, Mr Farage called for the relaxation of firearm laws, describing a ban on handguns brought in after the Dunblane massacre as “ludicrous”.