The store, in the Wimbledon Quarter, will open its doors at 9am on Monday, October 13.
It has undergone improvements as one of seven food halls being renewed by M&S across Greater London this financial year as part of a £90m investment.
The store will now provide more products, a revamped entrance, an in-store bakery, and a coffee counter.
Matt Rowlin, store manager at M&S Wimbledon, said: “We are so excited to welcome our Wimbledon customers back to the store and show them just how different the store looks and feels.
“We always want to deliver the very best of M&S, and we have even more everyday essential and festive favourites to choose from.
“Thank you to all of our customers for their patience while work has taken place—we can’t wait to see you on Monday.”
Dominic Waldron, asset manager at Romulus, added: “We’re thrilled to have supported Marks and Spencer as they invest in their future at Wimbledon Quarter.
“This expansion, alongside other recent openings, not only enhances the tenant mix but also demonstrates our commitment to evolving and enriching the experience for the local community.”

