BT's infrastructure subsidiary Openreach has reported strong improvements in customer service performance.
New figures show that Openreach engineers are fixing 84 per cent of faults inside two working days.
This marks a considerable improvement from when it started publishing performance data two years ago, when 67 per cent of faults were repaired within two days.
Openreach also confirmed that the average amount of time it takes to get an appointment has fallen from 11 to seven days, while 93 per cent of new lines are installed on time.
Furthermore, it said it is on track to halve the number of missed appointments this year, following a drop of more than a third in just three months.
Openreach stated that the data shows it is exceeding all of the 60 service measures set by industry watchdog Ofcom.
Clive Selley, Chief Executive of Openreach, commented: "Improving the service that we provide to customers is my number one priority.
"These latest figures show we’re making real progress and we’re well on the way to hitting my target of halving missed appointments to two and a half per cent within a year."
Mr Selley went on to state that while the data is "encouraging", everyone at Openreach "recognises there's more to do".
This, he said, is why it is recruiting an additional 1,000 engineers this year and simplifying the way it works to achieve better outcomes.
Mr Selley added that he is particularly pleased that despite the UK experiencing the wettest June on record, Openreach has managed to repair faults faster than it did a year ago.
The organisation also stressed that it is investing more heavily in proactive network maintenance, which it hopes will identify vulnerabilities in the infrastructure and prevent faults from occurring in the first place.