Sorry for your loss :(

I'm not sure if it has to do with the cultivar, but instead maybe the light levels? I have never been to the UK, but from what I hear and read, it is very cloudy there. I'm not sure how cloudy you guys get in the winter. We get cloudy here in winter too, and we do get much colder, but we still get sunny days in the winter when the sun is very intense, and even reflects off the snow to appear even brighter. So...maybe its a light level issue.
Good luck

That is funny looking. I would suggest that it is definately time to re-pot it. Not this momnet but in the summer when it warms up. Then i would suggest leaving it outside in full son for as long as weather allows. I don't know how hot it gets there. i know I;ve watched matches at Wimbleton when it's been quite warm.

rhizophora is there any drain holes in that pot ? You need a pot that drains quickly and soil that drains fast as well. Keep it warm always away from vents and put it in the shower every week or so for a shower and leave it in the warm humid room for awhile and that will help.

rhizophora,

That is a light starved coconut palm if I have ever seen one! That is why the leaves are unusually long and tender looking because they are desperately trying to reach some sunlight. The problem you will have growing coconut palms even indoors is that they need direct sun as much as possible and warm temperatures. They truly cannot handle the extremely long cool cloudy winters you have in England. They are tropical palms that need very sunny and warm conditions. We have a much milder winter climate in south Texas than what you have in England, and even at that there is really only one county here where they can survive outdoors and that is Cameron County at the extreme southern tip of Texas (where Brownsville is, Zone 10A). I have overwintered coconut sprouts in Bryan in Southeast Texas (Climate Zone 8B), by keeping them near a window in which they get some sunlight, and by setting them outside for afternoon sun on winter days when the temperatures are in the 60's and 70's F. Don't let yours set out at night for any temperatures lower than 38F. In the winter, only water them about once per week, and twice per week in the summer.

John