There were 21.9 million UK residential and business fixed broadband connections in the UK at the end of Q1 2013, it has been reported.
Publishing its latest Telecoms Market Data Tables, Ofcom revealed the number of connections was up by 967,000 compared to the first quarter of 2012.
This represented a 4.6 per cent rise in the number of fixed broadband lines over the 12-month period.
Ofcom reported that fibre connections were the "main driver" of fixed broadband growth during the course of the year, rising by 792,000.
Another 163,000 cable connections were also made between Q1 2012 and Q1 2013, while there was a net gain of 13,000 ADSL lines.
BT's retail share of these connections was 29.8 per cent in Q1 2013, up by 0.6 percentage points compared to 12 months earlier.
Meanwhile, Ofcom reported that there were 33.1 million fixed phone lines in the UK at the end of the first quarter of the year.