Blue dial Seiko with brown leather strap

I lost my blue-dial Seiko watch yesterday around 3pm near Piccadilly Circus tube station. It's a Seiko 5 automatic with a blue sunburst dial, stainless steel case, and a worn brown leather strap that's starting to crack near the holes. The back is engraved with the initials AK and there's a tiny scratch on the bezel at 2 o'clock. It was a gift from my mum, so it means a lot to me and I really need it back. If you found it, drop me a line—I can arrange a pickup in central London and offer a reward.