What is this plant?

I have one of these in my garden. It has flowered nonstop it seems. What is it called (I'd like to buy a couple more), and does it need pruning?

Many thanks in advance!

 

The thing is though, WOO, for those 2 or 3 seasons, you get your money`s worth from them.

 

Oh, thanks, that has been very helpful. I have yet to learn how to take cuttings. Hopefully I'll master it before it's gone horrid. I really like it - nice shape, bright coloured flowers, and attractive blue-greeney foliage. I'll try and find the Yellow variety - didn't know it came in other colours.

 

Rosie theres also a Peach coloured one and a variegated form.

 

I heard of someone who had - presumably a patch of it, that hadn't been out of flower for 10 years. But the only one that I ever had died of wind-rock, which I think is one of its problems.