Found: black backpack with red zipper

I found a black backpack this afternoon around 2:40pm near the entrance to the Bullring Shopping Centre in Birmingham, West Midlands. It's a medium-sized bag with a red zipper, a blue USB cable sticking out of the side pocket, and a lime-green guitar-pick keychain attached to the zipper. Inside there's a blue notebook and a Birmingham New Street train ticket, plus a white star sticker on the front pocket. If this is yours, please describe one of the identifying features—the keychain or the notebook—and we can arrange how you can claim it.