Since the 756s are currently expected in a matter of a few weeks, the Class 150s/153s kicked off the TAM lines will probably move to free up Class 197s on Maesteg, Cheltenham and Ebbw Vale temporarily, a quick reminder that Class 231s are expected to remain where they are currently until the Class 398s move in to displace the 756s off the TAM lines, freeing up the 231s to move back to Maesteg, Cheltenham and Ebbw Vale. I'm assuming with the massive surplus of units they'd try double up and fix up services which are currently shortformed, as it'd be a fairly logical move in my opinion. It isn't that massive of a surplus, but still a nice uplift compared to now.