Since I've had it, it has never flowered since.

It gets full sun. It is in the same pot as when it was given to me.

What can I do to get a flower?

I have stopped her going on the sunbed and the orange colour is now fading however she will always look like a pig.

Hope this helps.

Its easy to takes cuttings, just snip a bit off and stick in into a glass of water for a couple of weeks. Roots will start to grow, and you can pot it up.

If yours is not flowering wonderfully, or didn't last summer, I would just throw it out and buy another one !