Ah yes, Underground Ernie. That was another rail-themed British animated series, but it took place on the London Underground (albeit a heavily fictionalised version of it). In addition to trains named after the real lines (Bakerloo, Circle, Hammersmith & City, Jubilee, Victoria), they were also joined by "international" characters named after cities in other countries (Osaka, Moscow, Sydney, Brooklyn). I don't recall watching the episodes themselves, but I have very fond memories of the official website. Despite the visual similarities, it predates Chuggington by two years. It was also the only thing made by Joella Productions.
Our Nigels has both the Bachmann and battery powered ranges, and he loves them. These threads might be familiar:
Our Nigels has both the Bachmann and battery powered ranges, and he loves them. These threads might be familiar: