Netomnia has secured an additional £25 million loan from the National Wealth Fund (NWF).
County Broadband now intends to pass half a million homes and businesses by the end of 2027, following £100m investment from Aviva Investors.
The Essex-based altnet is already delivering its service to over 150 villages across Essex, Suffolk, Norfolk and Cambridgeshire as part of an initial £46m investment from Aviva Investors in 2018.
County Broadband has also set out plans to double its workforce to over 250 and invest in local skills and apprentices whilst engaging with regional suppliers.
Lloyd Felton, Founder and Chief Executive of County Broadband, said: “This reaffirms our continued and successful partnership with the Aviva Investors team over the last few years.
“As we embark on another exciting phase of growth, we will always retain our 18-year heritage as a proud, local community driven provider.”
Sean McLachlan, Senior Director, Infrastructure Equity at Aviva Investors, said: “The rollout of fibre to homes and places of work represents a project with high social value and community benefits, particularly as families and businesses settle into hybrid working, where fast and reliable internet connections into the home are increasingly important and relied upon."