You can certainly try cutting back past the point where the stem is soggy - this may induce new growth from lower down the stem, or from the base.

I did just that..as described by Bamboo... and am hoping that it wil resurrect itself! Fingers crossed.

I love these plants bought two for either side of my swing,
what great tips you all give,Hi Bamboo,and welcome to another Londoner

i think you have lost it,my dad and his neighbors went like this and we have had to get rid of both,think the bad winter killed them,funnily enough ive noticed a lot gone from gardens lately

Ladybug, thousands of cordylines died from this last winter, some of which were pretty old - fortunately, Tesco and Wilkinsons were selling new ones earlier this year for between £3 and £5, so not expensive to replace, but will take some years to reach over 10 foot, of course!