Hi Adrian, the last suggestion worked really well. Thank you so much.
I had tried using the 3 flags earlier but because I had the Gradient Texture still attached between the Mapping Node and Color Ramp it was only letting me do one half of the column (or one half of the gradient basically).
As soon as I removed the gradient Texture it allowed me to color ramp across the entire column. It did mean I had to tweak the mapping values to get the right angle and scale again but I’ve now got a great result and less nodes than I had previously used to achieve it.

