Surdeau, who spent 15 years at Tesco, Britain's biggest retailer, in various finance roles, will start on Jan. 7 and report into group chief executive Steve Rowe.

Singer left M&S on Dec. 31. His departure was announced in September after little more than a year in the role.

A spokeswoman for M&S said Surdeau was not a candidate for the permanent CFO position.

M&S is due to update on its Christmas quarter on Jan. 9.

In November it reported a 17% drop in first-half profit, dragged down by falling clothing sales, but said it was confident it could fix its problems and return to growth.

M&S shares were down 1.5% at 1129 GMT, extending its losses over the last year to 11.4%.

(Reporting by Tanishaa Nadkar in Bengaluru and James Davey in London, Editing by Maju Samuel and Paul Sandle)

Stocks treated in this article : Tesco PLC, Marks & Spencer Group plc