Sir Richard Branson's Virgin Mobile said it had bucked the trend in the sector by ringing up a jump in subscriber growth.
Britain's fifth biggest mobile phone operator added 171,367 net connections in the second quarter of the year, 19.2 per cent more than a year ago.
The group said it had moved into long-term profitability but refused to reveal any figures.
Virgin Mobile boss Tom Alexander said: "Despite the economic chaos in the rest of the telecoms sector, Virgin Mobile is a shining exception.
"Our growth continues to accelerate, we've moved into profit, and we're looking forward to an even brighter, more colourful future."
Virgin Mobile is a private joint-venture between the Virgin Group and Deutsche Telekom's T-Mobile unit.
It has gained by simply piggybacking T-Mobile's mobile phone network rather than building its own.
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