It could be a nutrient deficiency or being too wet. Can you post a picture of it?
Hi there, thanks for the suggestions, have added a photo of the plant as my profile picture (could not see any other way). I have re-potted the plant and added more drainage to the container along with giving it a feed, time will tell.
I was actually thinking the Cordyline could be too dry, especially if in a pot. They like well draining dampish soil. They grow massive in Ireland and up the west coast of the UK where it is wet.
Hi Scott- I'm in East Ren too! I don't grow Cordylines because of the hardiness issue but I do grow Irises, Phormiums and Sempervivums. Drainage is the key- the better it is the more likely they'll be to thrive. It's been very dry here as you'll know (water isn't something we usually go short of!) but I'm wondering if you've watered a bit too much to compensate. I rarely water my phormiums and they're in pots. Getting it repotted with as much grit as you have soil is probably the best solution just now and watch it's not getting blasted by cold winds.
Cordylines are hardy in sheltered areas with good drainage.
I grow them and up the Scottish coast to Ullapool they grow into tree size, just as they do in Southern coastal England.
They do badly in exposed dry or exposed wet areas.