Birds of Paradise plants (West End EH12)

I planted these as seedlings about 8-10 years ago and they are now outgrowing the back porch but they have never flowered. I think they need a warmer, more humid atmosphere such as a conservatory or heated greenhouse. So if anyone would like to take either or both, and hopefully help them to thrive, and flower, please get in touch. If I get more than one response, they will go to the first two people. The plant on the left of the picture is about 1.3 m tall (4 ft 3 ins) and on the right about 1.2 m (4 ft). To collect from West End of Edinburgh, near Haymarket, by prior arrangement (might be able to deliver on or near route from Barnton junction to Haymarket)