If 100Mb is described by Virgin Media as "ultrafast" we're not sure we can find the right superlative to describe its 1.5Gb service that it has just revealed details of.

The ultramegasuperfast (that kinda works, right?) service is what trialists in London's Silicon Roundabout are experiencing - a speed 240 times faster than the national average broadband speed and officially the world's fastest cable broadband.

The service also includes 150Mb upload speeds and even Communications Minister, Ed Vaizey is excited by the trial. "It is fantastic to see the fastest internet speeds in the world over cable being trialled here in the UK," he said.

"This exciting development will help attract new companies and entrepreneurs to the area, bringing new jobs and growth to this part of the capital.

"Last year the Prime Minister set out our ambition for London’s East End to become a world-leading technology city to rival Silicon Valley.  Developments like Virgin Media’s will help make this ambition a reality."

The high-speeds are possible as a result of huge investment from Virgin Media and it states the tech is future proof. It uses DOCSIS 3.0 technology with "theoretically near infinite capacity".

Virgin Media also recently announced that its 100Mb service now reaches over a quarter of the country. That seems a bit slow now though.....