BT has announced plans to invest a further £50 million into its commercial fibre broadband programme over the next three years.
The broadband provider is to make super-fast BT Infinity broadband available to another 400,000 premises across 30 UK towns and cities.
The latest investment will see BT enable city cabinets that were not part of its original commercial plans due to technical challenges or local planning restrictions.
BT will also deploy fibre to cabinets to serve multi-dwelling units such as apartment blocks, and lay fibre at new-build sites across UK cities.
The telecoms giant is spending more than £3 billion deploying fibre broadband around the UK, with its open-access fibre network already passing more than 18 million homes and businesses.
At present, around 73 per cent of UK premises can access a fibre broadband deal; a figure which should rise to 90 per cent by late 2015 or early 2016.
Mike Galvin, Managing Director of Network Investment at Openreach, said BT's fibre programme is "going extremely well" with engineers connecting homes and businesses across the UK.
"Some city areas have proved challenging in the past but we are returning to those and will pass hundreds of thousands of additional premises with fibre," he stated.
"We are reaching vast swathes of rural Britain with our public sector partners but we will upgrade these city areas under our own steam. Businesses in cities already have access to ultra-fast speeds but fibre will give them greater choice."
Mr Galvin claimed the UK is already ahead of its main European rivals when it comes to fibre and "is set to race ahead" in the months and years to come.
According to BT, more than five million premises are already using fibre broadband across all networks.
This level of adoption puts the UK ahead of France, Germany, Italy and Spain, the broadband provider claimed.