"The London Stock Exchange has begun a twelve-month migration to its new trading platform, based on Linux, as trading fell sharply.
"In a busy three months for the exchange, it also agreed a framework plan for its newly-acquired controlling stake in Turquoise, a large volume 'dark pool' trading platform.
"The LSE suffered a heavy fall in sales of real-time trading data. While the group's IT revenues, from selling information and server hosting, grew three percent to £55 million in the three months to 31 December, real-time data sales fell nine percent, nearly three million pounds."
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