If that becomes a reality, a movie would take just 4 seconds to download and a 50GB PS5 game would be ready to play in under a minute.
Virgin already supplies around 1.5 million with an FTTP connection but this will be boosted over the coming years.
Speaking about the upgrade, Lutz Schüler, CEO of Virgin Media O2, said: “Our mission is to upgrade the UK, and we are doing exactly that. This major new fibre upgrade programme will see us begin the next evolution of our network, building on the investment, firepower and leadership we already have and ensuring we’re fibre fit for the future.
“Right now, we have the UK’s leading gigabit network, and this upgrade means we’ll be even stronger for the decades ahead, pursuing new opportunities and putting words into action
“In 60 days since the formation of Virgin Media O2, we have achieved a lot, but this is just the beginning. With strong foundations for growth in place, we will boost connectivity, provide greater choice and be a challenger the country can count on.”