Kentia palm...Also known as a Lord Howe island palm

Howea fosteriana

Thank you Badfish :)

It's too big to have indoors, so ill grow it outdoors in a pot and treat it like my other palms, do you have any idea what size pot I should put it in ?

They're not hardy booboosmur, they are a tropical palm and really don't like being below 10c. they would possibly tolerate a warm summer outdoors but not a winter. Keep them out of the sun too.

Oh well I have potted it up, and it's i the shade, I'll have to find room indoors for it then.