E-Scooters: I've seen it all now

Whilst walking down the busy main corridor at the Royal Derby Hospital yesterday a guy in, I would say, his early twenties, (I'm 99% certain he wasn't staff), came out of the doors of one of the side clinics pushing an E-scooter. Once into the main corridor he promptly jumped on his scooter and proceeded to ride it, weaving through the people walking along the corridor. The corridor is not particularly wide and people are walking in both directions. Any one of them could have been hit by this idiot.

He had obviously ridden his scooter illegally to get to the hospital and then taken it in with him. Where was the hospital security? No where to be seen unfortunately.