I was chatting to Mark, one of the lock keepers at Hull marina on Saturday morning, and we were discussing the winter and considering whether snow was in the air. He got to talking about last winter when the coldest temperature recorded in Hull was a staggering -28 deg C, when the lock gates froze solid, the police used it as an opportunity to do some training in ice diving in the marina, and that the river Humber froze for the first time since 1963 (I think). He told me to go and look on YouTube for a video of the frozen Humber and the RNLI. So I did and here it is:

Incredible really