Off to Essex, where Geoff Hutton brings our attention to our latest station cat.

"Gidea Park Station on the TfL Shenfield line also has a cat, although she is a bit camera shy," he says. "Apparently she lives in a neighbouring house, but spends much of her time at the station - usually, as illustrated, on the north side ticket barrier. Surely such an arrangement should be mandatory for all stations?"