A number of telephone exchanges in large urban areas are yet to be upgraded by BT, it has been claimed.
ISPreview.co.uk has revealed the five largest UK exchanges - in terms of premises served - which are yet to be fibre-enabled, as part of BT's £2.5 billion network upgrade.
These are in Darlington (with an estimated 43,000 connections), East Kilbride (34,000), Dudley Castle (28,500), Wakefield (28,000) and North Shields (27,000), the news provider reported.
ISPreview.co.uk noted that BT's fibre rollout is now "at an advanced stage", with the broadband provider close to achieving its 66 per cent service coverage target.
And as such, it is somewhat surprising that sizeable areas of major towns and cities are yet to be upgraded to next-generation broadband.
However, the news provider explained that Virgin Media has a presence in each of the listed exchange areas, while unbundled services are also available using BT's wholesale network.
"All of this reflects a competitive local market, which is quite common for any urban area of such scale," ISPreview.co.uk stated.