If I’m going down, I’m taking you with me.” British Gas seemed to have adopted the old movie trope this week, with its unprecedented decision to refer Ofgem’s RIIO-ED1 settlement to the Competition and Markets Authority. Earlier attempts to have network costs included in the CMA’s ongoing energy market inquiry failed, but British Gas seems determined to have the same scrutiny applied to the one-fifth of the bill arising from network costs as is applied to the rest of it.