Turquoise, the equity trading venue majority-owned by the London Stock Exchange, posted record volumes for its new block-trading service in May in a sign of the increased appetite for larger trades.

The Turquoise Block Discovery Service, part of the platform's dark pool which it launched in October 2014, traded shares worth €127.3 million in May, a 67% increase on April's figures, which held the previous record, according to LSE data.