Cheers Wez. Aye, not a great deal of choice. Ideally I want a store that has their full range so I can try them all. Last night I had a go of a Gitzo's belonging to one of the guys at the photo club. It was an old mountaineer one with huge fat legs. I think the equivalent would be something like the GT5530S. I really liked it and it seemed solid as a rock. Also got on perfectly fine with the twist lock legs.
Origionally I had eyed out the GT3540XLS which ticks most of my boxes. But if the GT5530S ends up being tall enough, then I think this could be a better option. however it lists the max height as 133cm. With me being 6'2" I want to know if this is going to be tall enough, which is why I would like to test a few.