Internet service providers (ISPs) across the UK could end up boycotting many of BT's fibre-optic infrastructure pilot schemes if the company does not lower its prices.
Senior executives from a number of ISPs - including Virgin Media, TalkTalk and Vtesse Broadband - are expected to pull out of the fibre-optic broadband programme outlined by BT unless the amount the company can charge for the use of its cable ducts and telegraph poles is capped.
The executives have written a joint letter to Communications Minster Ed Vaizey outlining their concerns over costly physical infrastructure access (PIA).
They claim that failure to overhaul the Broadband Delivery UK (BDUK) pilots would hamper the next stage of fibre-optic broadband rollout.
"We are unanimous in the belief that the BDUK competitive procurement process will lack a credible alternative to BT, should BT fail to make substantial revisions to PIA product pricing," the executives claimed.
They added: "PIA will be a commercial and policy failure if Openreach does not revise its prices. Moreover, we are united in the view that the product is unfit to proceed into commercial use."
Broadband bundle provider Sky is also believed to have written a letter to Mr Vaizey outlining similar concerns.