BT lost more than 200,000 broadband customers in the last three months of 2025 and profits fell sharply, mainly linked to its shared ownership of the pay TV broadcaster TNT Sports.

The telecoms company said that in the third quarter of its financial year, 210,000 customers left Openreach, its wholesale broadband network, and that it expected to lose a total of 850,000 broadband customers in its full financial year. That was down from previous guidance of 900,000.

BT said revenues fell by 4% to £5bn in the quarter, while pre-tax profits slumped 57% year on year to £183m. The company said £214m of the £244m year-on-year drop in profits related to its share of losses at TNT Sports, which it co-owns with Warner Bros Discovery (WBD).

The BT chief executive, Allison Kirkby, said the company remained on track to meet its financial forecasts for the year. Shares were down 1% on Thursday.

Meanwhile, shares in Vodafone fell more than 6% after the telecoms company reported that revenue missed expectations in its third quarter of trading to 31 December.

In the UK, where the company is forging ahead with the integration of Vodafone with its rival Three, revenue fell 0.5%.

The UK operation, VodafoneThree, lost 73,000 mobile contract customers in the quarter, primarily “very low-value” customers in its business-focused division. The company added that it continued to lose customers at Three but customer retention and loyalty was rapidly improving.

Margherita Della Valle, the chief executive of Vodafone group, said the customer churn rate at Three UK had improved by 3.1 percentage points in the six months since completing the takeover deal. She added that across all of the company’s brands, which include Voxi and Smarty, churn reduced by 1.7 percentage points year on year.