Cordylines tend to grow like a palm tree with one stem forming a "trunk". If they've been cut back by frost they can shoot again from the base, in which case you get several trunks coming from one base. While it could have started out as a line of cordylines that were planted in a row and have all regrown, a bit, what you've got looks more like a line of Phormiums to me.

Aaah yes looking at the pictures of phormiums that fits. Thanks a million.

I wanted to find out as these are the only plants I want to remove. To make more veggy space.

Thanks.

Hi Pamsco I have just posted a blog on a cordyline owned by my daughter. It is quite easily identifiable by its quite ugly trunk. Its saving grace is the flower it has just produced for the first time. Good luck with your new garden.