London Stock Exchange (LSE. L) posted a 19 percent slip in full-year earnings per share as it racked up the costs of restructuring the company, while outlining a recent upturn in trading at subsidiary Turquoise.

LSE has been witnessing a poor market share to Chi-X and BATS, low-cost alternative platforms known as multilateral trading facilities (MTFs), sailing in the same boat as other European exchanges, since pan-European regulation opened the market to competition in 2007.

"The strategy amounts to a total re-engineering of our business over a two-to-three-year period," Chief Executive, Javier Rolet quoted. "The costs to achieve this are starting to come through, but the fruits of our labour have yet to be harvested".

LSE shares were unchanged at 650 pence at 0927 GMT.

LSE recorded a net profit of GBP90.4 million compared to a net loss of GBP338 million recorded in the previous year, when it took nearly half-billion pound impairment on its conglomeration with Borsa Italiana.

In addition, LSE's operating profit registered a slip due to a cost of around GBP25.3 million in changing its Tradelect trading engine.

The group's loss of market share is cited to continue with its downward trend at least until the LSE introduces an upgraded technology, Oriel Securities said.