Next generation fibre broadband could be partly funded by TV licence fees, says the Conservatives.
Shadow chancellor George Osborne revealed the party's plans to bring 100Mbps internet access to the "majority" of homes by 2017.
Osborne said where private investors could not be found to cover the cost of laying fibre cables, the licence fee would be used.
The party revealed it believe the BBC should continue to set aside 3.5 percent of the licence fee, which currently funds the digital switchover, to fund the shortfall from private investors.
However Labour said the Conservatives were simply playing "catch-up" and Liberal Democrat culture, media and sport spokesman Don Foster said: "Anyone can promise the earth - what matters is how you pay for it".