Blacks Leisure has sold 10,000 loyalty cards just two weeks since it launched the scheme in stores, and the retailer hopes it will be a key driver of sales, as like-for-likes fell 7.5% in the 17 weeks to June 26.

House broker Singer Capital has doubled its forecast losses for the group from £2.5m to £5m following this week’s update, which assumes a like-for-like sales dip for the full year of 2.5%.

Blacks chief executive Neil Gillis said sales stalled in May, hit by the dry weather and a dip in consumer confidence around the election and the Budget. He said initiatives such as the loyalty card, which costs customers £5, and a new training programme will help attract customers.

He added the group’s full-year performance hinges on the second half where it “makes all of its money”.