I have a brand new Ridley X Bow 105 for sale (see - http://www.ridley-bikes.com/pd/gb/en-gb/4/354/cyclocross/x-bow )
The size is 50cm centre to centre (see the Ridley bike link for sizing info).
The bike has never been riden but has a small dent the size of a 1p peice near the bottle cage bolts on the seat tube.
Photos are available on request.
I don't have instant access to my emails but will reply to any questions asap.
The bike is in Bath and can be viewed during office hours.
Price - £650
For details please e mail rogerosborn67 at hotmail.com