BT is offering its customers that take a phone and broadband bundle the chance to upgrade to its fibre service for free, when it becomes available in their area. The fibre service, which is known as BT Infinity, was launched in January this year and offers download speeds of 'up to' 40Mbps and upload speeds 'up to' 10Mbps. Prices start from £19.99 per month for the service, which BT claims is cheaper and faster than its cable competitor, Virgin Media.

The cheapest bundle this offer applies to is the More Broadband and Calls package, which is priced at £17.99 per month.

"Fibre is the future of broadband and BT is raising the speed and standard for customers nationwide. BT Infinity is head and shoulders above other services when it comes to value. We are the only company offering you an upgrade to fibre for no extra monthly cost and the only company to offer free line installation across all new bundles," said John Petter managing director of BT's consumer division.

However, Brits could be waiting some time for Fibre to reach their area. BT said is hopes to have the Infinity service rolled out to four million homes by the end of 2010, but it won't be until 2015 that two thirds of the country will have access to the service.

BT Infinity was launched following successful trials in Muswell Hill, Whitchurch, south Wales and Glasgow last year.