Blue king-size duvet cover set with pillowcases

I lost my blue king-size duvet cover set yesterday around 3pm near the Tesco on High Street in Chelmsford, Essex. It's a SnugHome 100% cotton set, deep indigo with a slim white geometric border. The duvet cover has a tiny snag at the bottom corner and there’s a faint embroidered initial 'AM' inside the inner flap. I’m missing the two matching pillowcases as well. It has sentimental value—my grandmother gave me this set, and I really need to get it back. If anyone found it, please message me—I can describe more details or meet somewhere nearby.