BT has lowered the minimum speed that internet service providers (ISPs) reselling its fibre-to-the-cabinet (FTTC) broadband services can offer.
As a wholesale provider, BT allows rivals firms to provide broadband deals over its network, in return for a rental fee.
Up until now, ISPs offering FTTC broadband - which theoretically can provide up to 40Mb download speeds - have been required to provide minimum speeds of 15Mb.
However, BT has reduced this lower limit to 5Mb, providing additional flexibility to broadband providers using its network, reports PC Pro.
BT said the decision had been made in order to increase the number of UK consumers who are able to benefit from FTTC broadband.
Customers whose home phone lines were previously unable to support 15Mb will be able to access faster broadband speeds, the ISP stated.