Details of the takeover negotiations between the London Stock Exchange and Turquoise, including the UK exchange's "tactics and standards of integrity", could be revealed in a lawsuit that is being brought by the former chief executive of the alternative trading platform.

Lederman, who left Turquoise in February last year after it was acquired by the London Stock Exchange, is suing the LSE for unfair dismissal citing an "egregious usurpation of rights."