Jeremy Corbyn has reaffirmed his commitment to investing in the UK's infrastructure if Labour wins the next general election.
Speaking at the annual party conference in Liverpool, the Labour leader said the government has promised a broadband Universal Service Obligation for 10Mbps.
However, Mr Corbyn stated that since making this announcement, ministers have let down entrepreneurs, businesses and families, particularly those in rural areas, when it comes to improving connectivity.
This, he said, is why Labour has set out proposals for a National Investment Bank, with £500 billion being used to bring the UK's broadband, railways, housing and energy infrastructure "up to scratch".
"I am not content with accepting second-class broadband, not content with creaking railways, not content with seeing the US and Germany investing in cutting edge and green technologies, while Britain lags behind," Mr Corbyn commented.
"A country that doesn’t invest is a country that has given up. That has taken the path of managed decline. A Labour government will never accept second-best for Britain."
Last month, Mr Corbyn committed to placing a guarantee of access to high-speed broadband in a digital bill of rights, should Labour win the next general election.
The Labour leader has estimated that providing a genuinely universal service across the country would cost around £25 billion, with this sum underwritten by a National Investment Bank and backed up by a legally binding universal obligation for a minimum connectivity speed.
Mr Corbyn insisted that this investment would be "money extremely well spent", as it would help to "reduce the levels of regional imbalance and regional inequality in Britain."
He also confirmed that he is open to the possibility of bringing the UK's broadband network into public ownership if BT and other fibre optic cable providers did not commit to universal access under current regulation.