Can anyone recommend an indoor tree

I think the problem will prove to be the heat in the summer rather than the winter cold....I can't think of anything particular, will think about it.............

Try a Mimosa Dealbata (the feathery-leaf type) - they can stand winter cold (I have one outside in Leicester now, fully-leafed ) and summer heat, and may even flower - but the leaves are lovely, year - round. I've just uploaded a photo of it.

Right, I've had a think, and I think a camellia would be nice - evergreen and will flower. Should be able to tolerate the range of temps. I've seen them grown in conservatories and they seem to thrive :-)

Or try a lemon tree although this will appreciate some time outside in summer. Cordyline australis might be good too as it's not really hardy outside.

thank you all for suggestions - it doesn't actually get very hot in the summer as the sun's never really shining on it fully! I think a camellia is a good idea - lovely flowers!

Ok Jasmine! Don't forget to use ericaceous compost tho! :-)