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Grevillea of some sort
Australia
Grevillea is one of the most extensive family of plants, I think. But it was funny - I opened the book and it was the first picture I saw! And then checked it online, which said it's a native to Australia, so maybe it's a good bet. If it's wrong, someone will tell you eventually! :)
Thanks Dangermouse, I think you might be right. I tried looking it up but there are so many varieties and apparently they easily cross pollinate in the wild to form hybrids.
One of my favourite plants, but I'm not sure about the ID either. Let me go grab the Big Book (RHS Enclycopedia!)