Essex,
United Kingdom 
My bird of paridise plant I've had for three years still has not flowered dispite increasing the pot size as its grown and keeping well watered.
28 May, 2010
Answers
As Volunteer says, there's still time, but make sure it's getting plenty of light, including some direct sun. They refuse to bloom in complete shade, even here in the desert.
28 May, 2010
They like lots of bright light even in winter, but they don't usually flower much before 4 or 5 years old as houseplants in the UK, by which time they should be about 4 feet high and in a very large pot.
28 May, 2010
Mine took 5 years to work up to flowering! Keep at it!
28 May, 2010