LSE close hit by trading glitch

The London Stock Exchange failed to stop trading yesterday as scheduled – one day after completing a major system upgrade – causing confusion among traders, who blamed a technical problem. The LSE, which ends normal trading at 16.30 GMT before starting its closing auction, conceded on its website that normal trading did not cease until 42 seconds after the official close at 16.30. The LSE, which said all trades would remain valid, said it was investigating the problem.