
The store, at Parc Llandudno, closed yesterday afternoon for the remainder of the day due to a lack of water at the premises.
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The store reopened this morning, but said that its bakery, cafe, and customer toilets are all shut.
A spokesperson for M&S said: “Our Parc Llandudno store is open as usual this morning, so customers can shop in our foodhall, clothing & home departments, and use click and collect.
“Unfortunately, our in-store bakery, café, and customer toilets will be closed. We apologise for any inconvenience caused.”