London Mayor Sadiq Khan has not done “a particularly good job” in cutting crime, Holly Valance has said as she has revealed she was mugged when she was wheeling her baby in a pram through a smart part of the capital. Valance – the former Neighbours actress and popstar – emerged as a surprise supporter of right of centre policies when she accompanied her property tycoon husband Nick Candy to a Popular Conservativism event last month. Speaking to GB News’ new political podcast, Chopper’s Political Podcast, Valance, a mother of two who lives in Chelsea, west London, said that has failed Londoners…