M&S set for promotion back into Ftse-100 as it stages recovery

The news ends a four-year absence from Britain's main stock benchmark for the retailer

M&S shares have risen 78% this year as chief executive Stuart Machin leads a revival that was confirmed when the company unexpectedly raised its outlook last week. Picture: Gareth Fuller/PA

Marks & Spencer is set to regain its place in the Ftse-100 index, ending a four-year absence from Britain's main stock benchmark.

The retailer is one of four companies likely to be earmarked for inclusion in the gauge when index compiler Fftse Russell announces provisional changes after markets close,  according to calculations by Numis analyst Sam Murphy.