Berkett described the November 2006 bid for ITV, which was stopped by rival BSkyB taking a 17.9% blocking stake in Britain's biggest terrestrial broadcaster, as "a moment in time".
He said: "Our ITV bid was at a moment in time... the market is completely different today."
Virgin Media distancing itself from a future ITV bid follows the government telling BSkyB to reduce its shareholding to less than 7.5%.
His comments coincide with renewed bid talk for ITV from venture capitalists, as the broadcaster's shares languish at the 76p mark.
Berkett used the meeting at the Broadcasting Press Guild to reveal a change in strategy for Virgin Media. He said that Virgin no longer wanted to pursue premium TV customers and would instead focus on the middle ground.
He said: "Unless there's a change in the regulatory landscape, you will not see us employing shareholder capital in the premium TV space."
Berkett, who has been acting chief executive since Steve Burch's sudden departure in August, added: "All strategies, I think, evolve over time."
He also made a surprising revelation that its one time strategy to serve 50% of the UK market was no longer so important.
Through deals with Cable & Wireless, Virgin Media has tried to offer TV, fixed-line telephony and broadband services to customers outside its cable areas, or "offnet".
Instead he said, the company would focus on delivering faster broadband speeds to stand out from rival BSkyB. Virgin Media said it would be offering top end packages hitting 50Mbps by the fourth quarter, up from 20Mbps.