SSE has announced that it is to close a coal-fired power station at Ferrybridge in West Yorkshire, taking a further 2GW of capacity out of the grid. I'm not sure whether this has been factored into Ofgem's capacity margin calculations already.
The unions, who have been toeing the green line for years, are squealing loudly. If I were one of their members I would be wondering what I'd been paying them for all this time.