Images below of a Follows & Bate's 7in Climax acquired recently, most of those I know of being 6in cutting width, except I believe one of Hall & Ducks (is it an 8in or 10in Andrew?).
I have put it alongside a 6in, other than the extra inch both wheels are geared to drive the cutting cylinder which has 5 blades, rather than the 4.
I am assuming the rubber tyres are original, although perished they are more or less intact.
Now looking for the bigger ones perhaps a 12 or even a14in!!