Retail Week can reveal that Lumsden will join M&S on Monday in the newly created role of head of optimisation and analytics. 

The retailer said Lumsden will be responsible for leading the analytics, website optimisation and SEO teams and will be charged with ensuring M&S.com offers “a cohesive and consistent” experience for its customers. 

She will report into Stephen Langford, who joined the business as director of M&S.com back in May.