Waitrose plans to have 11 motorway service station stores open by May and isalso doubling its tie-up with Shell forecourts.

The retailer began trials with motorway service operator Welcome Break last May, with five 2,500 sq ft stores opening before Christmas. Two stores have opened this month, with four to follow.

Following trials in three Shell forecourts in Birmingham, Waitrose is introducing a range of 200 branded products to Shell forecourts in Beaconsfield, Derby and Leicester.

Waitrose has said it plans to open 300 c-stores within 10 years.