Freezing temperatures have pushed UK power prices to a record high, with the National Grid putting coal plants on standby to handle a peak in demand expected on Monday evening. Our energy editor Rachel Morison explains the crunch the grid is facing, and what's being done about it. Plus, Rightmove's Tim Bannister takes Bloomberg's Stephen Carroll and Lizzy Burden through the details of their latest figures, which show asking prices falling at the fastest rate in four years.