It could take six years to cover 90 per cent of the UK with fibre optic broadband, says BT.

The announcement was made by BT CEO, Ian Livingston, when David Cameron and the cabinet visited BT's research headquarters on Monday.

"Within the next five or six years, fibre-based services could be available to more than 90 percent of UK premises with the majority able to access broadband speeds of up to 100Mbps or above," said Livingston.

He also said that the company was slowly reducing the number of the UK's 'slow spots' from 12 per cent to two percent, thanks to its expenditure on infrastructure and research.

The main problem for many of the UK's notspots in rural areas were primarily due to premises being far from an exchange or small populations, which makes high speed internet a commercial viability.

BT will endeavour to continue bringing fibre optic broadband to most of the UK, however, as in May it pledged to spend £2.5bn to help make speeds of at least 2Mbps available anywhere in the country by 2015.