Homechoice currently serves parts of London and Stevenage in Hertfordshire.
Video Networks has appointed Credit Suisse First Boston to lead the fundraising for the expansion, which will quadruple its coverage from 2.4m to 10m UK homes, giving it a footprint similar to NTL-Telewest's.
The process requires the 'unbundling' of nearly 500 BT telephone exchanges, mainly in cities and conurbations. This will enable Video Networks to install its equipment, allowing viewers to receive its triple-play offering of broadband, TV and telephony.
The activity follows a doubling in Homechoice subscribers to 34,000 following an ad campaign by Mother, which broke in September. Video Networks claims the activity led to an 85% uplift in sales.