I'm not sure that we're there just yet.
There was a slowdown in lending towards the end of the year, so when banks announce their year end results they might have to take measures to solidify market share.
UB roll their rates every 6 months because of how they fix durations, but their rate changes don't always happen on the same date.
If anything is going to happen re rates this year, it'll happen in March. (In my opinion - I do not work in mortgages, and have no inside info from any bank).