After a string of defections from Superquinn to Dunnes, a senior player at Dunnes has now moved to Superquinn, reversing the flow of traffic.

Andrew Street, who had been chief operating officer at Dunnes for 12 years, has taken over as CEO of its smaller rival, Superquinn.

He had been a director at Dunnes since 1996, having joined from Boots.

His appointment will ­allow Superquinn's executive chairman, Simon Burke, to step back from the day-to-day management of the 24-store chain and take a more strategic role.