Putting more freight on the rails around the UK capital makes perfect sense, says politician Caroline Pidgeon. She should know what she’s talking about. Pidgeon is deputy chair of the London Assembly Transport Committee, a former mayoral candidate, and a keen promoter of rail freight. She recently wrote an open essay, putting forward her views on the advantages for the congested capital city. With a radical extension on the horizon for London’s Ultra Low Emissions Zone (ULEZ), covering the whole metropolitan area, a rethink of rail freight is a timely intervention.