I have a Kinesis Maxlight xcpro2 in gunmetal grey, 18" centre to top but more like 15.5-16" centre to centre (I'll measure if you're keen). Very nice very light frame. Comes with headset and seat clamp £90 posted.
Also have a 17" Rock Lobster team tig sl in black 17" c-t, the nice Easton Ultralite one. That'd be £70 posted.