There's a mouse in the kitchen

Last Friday of week 4 and I have found a way of getting from the underground to my train without going 'top side' and coming out just outside the gates for my train.

As for the mice, who are also on there 4th week, they have been busy eating any food left out or in locked cabinets - not sure how they get in the building, pass security, barriers and got the lift to the first floor. They seem to like Mars bars.