The London Stock Exchange has been boosted by a surge in revenues from investing funds held by its Italian clearing house, in a sign of the growing importance of clearing services to traditional exchanges.

The UK exchange today revealed that treasury income from its central counterparty business increased by over 300% from £3.4m to £14.9m during the three months to 31 December, compared to the same period last year. The figure jumped by over 140% to £31.6m in the nine months to 31 December, compared to the same period in 2009, according to the company's third-quarter results.