In this week's round-up of stories in the weekend press we see Ofwat accused by industry investors of being politicised as financial backers question if the CMA has the capacity to deal with anticipated appeals; energy suppliers are criticised for holding onto customers' cash to continue trading - Money Supermarket founder highlights energy firms that have gone bust while owing customers; meanwhile the Mail on Sunday offers advice to customers who think they are owed cash back; and is nuclear energy having a lightbulb moment?