I did wonder why every other vehicle on Ashton Old Road was a police van, turns out it's because Piccadilly is on fire. Well a bit on fire anyway.
Thankfully little hindrances like a tunnel network inferno and subsequent road closures aren't a problem for bikes and pedestrians. The motorists that had to do u-turns and anyone delayed on the trains aren't having such a good morning.
At least 5 fire engines there when I went past along with the mobile fire station lorry thing they have. Can Imagine a fire in a cramped old tunnel network is about as noxious & claustrophobic an environment you can get.