Or indeed my favourite anomaly the Circle Line which is signposted as "East" and "West" bound despite being a loop! (Ok, it has a terminus now which it didn't

Or indeed my favourite anomaly the Circle Line which is signposted as "East" and "West" bound despite being a loop! (Ok, it has a terminus now which it didn't used to - but that doesn't really clarify anything for baffled tourists at Bayswater).