Thanks Tris, I've always liked the look of the big TFs, may have to have a ride over this summer to were I saw this one as I think there's a few more working in the area.
Some where in a wallet i've some working photos of a TF46 I went along to see on a friend's farm a few years ago, very impressive machine, i'll get them dug out and scanned.
I've only ever seen anything like the Holmer in magazines before and in other topics on here, I'm assuming the Terra Variant is a platform machine that can be used with other equipment.