"We went on from there to reach over 13 million broadband lines within five years," he said. "Now we have over 19 million. It’s dangerous just to assume that history will repeat itself, but it’s still a good pointer to what will happen to superfast broadband in this decade."
Point Topic’s estimates for the current number are based on its detailed figures for the end of 2010.
These show there were 175,000 superfast broadband lines in use by then.
The majority were for the 118,000 Virgin Media customers signed up to the 50 megabits per second (50Mbps) cable broadband service.
The remaining 57,000 or so were getting superfast broadband over telecom infrastructure owned by BT and alternative network operators (altnets).
Projecting these figures forward and allowing for some increase in growth suggests there were about 236,000 superfast lines by the end of March.
"At that rate we should pass the quarter-million milestone sometime between now and the end of April," said Johnson.
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