I admit it. I've changed my mind.
Having been quite taken with the description of "the teacup line" to explain London Underground's plans for the Circle Line, I must now admit that - having seen the publicity - it's actually becoming more of a monocle line.
A computer thinks the following may also be of interest:
[...] will run (with me on it). From Sunday 13 December, the Circle Line will be shaped more like a…you guessed it… Cue conspiracy [...]