Meh we're down to 1.1% of generation being coal in the last year; low enough to stop worrying about. Lets worry about how to get rid of the 33.5% of gas!
We probably want to be sure if gas imports are heavily hit again or a major interconnector goes down we'll be fine before entirely demolishing it.
Gas is now more of a year-round flexible baseload, taking up the slack whenever demand is high and/or renewables production is low.
Nuclear is now the only true baseload in the UK - always generating more-or-less the same output except when they have to be shut down for maintenance, refuelling, or decommissioning!