Around 1,300 McColl's workers have been put at risk of redundancy as part of proposals from Morrisons to shut 132 loss-making stores at the convenience chain it bought earlier this year.
The supermarket giant rescued McColl's earlier this year in a £190m deal when it was on the brink of collapse.
Bradford-based Morrisons, which is owned by US private equity firm Clayton, Dubilier & Rice, announced on May 9 that it had acquired all of McColl’s 1,160 stores, which include 270 Morrisons Daily format stores, saving 16,000 jobs. It beat a rival bid by the billionaire Issa brothers' EG Group.