Thanks so much Rina! Yes, the whole thing was etiolated - the right side was a lot worse actually as it hadn't been turned. The plant has been in as good a spot as I have since November, in a garden room with windows facing south, west and north, as well as two large skylights. I'm hoping now we're getting more daylight it will fare better.

I've taken most of the rest off now but I'm wondering how best to deal with the large branch at the lower left - should I cut it off above the soil, or try to dig it out as it has its own roots and would make a pretty substantial plant in its own right. If I cut it and re-root it, shall I prune it at the same time, or wait until it shows some roots? (the soil is awful, but I have gritty mix ready to go!)

If it has own roots, I would just separate them when repotting. I would repot asap. I would also prune those etiolated branches on it too. You could just shorten them, leaving 2 sets of leaves on. You could do that with all branches left on the main plant too. If you leave them as long as they are, you'll end up with etiolated part followed by more compact growth.

I have same problem with light during winter, and do not have a sunroom - I keep most of the plants under supplemental lights whole winter long. I'll take a close-up photo of the branches to show you how they grow - some are still not a compact as I would like. Here are couple of plants in Feb this year - plant on left is more compact than plan on right. Difference between 'under the lights' (left) and 'in the west window' (right).

I can't see exactly where you pruned branches, it is best to cut just close to 'collar' on the branch, leaving little flesh to callus. Otherwise, it rakes too long - long piece will slowly shrivel and dry up, but takes a while. Looking at your photo, I tried to mark on one of the branches where to cut it: - hope you can see what I mean:

I've taken the rest of the branches down past the leaves so it's eavenly pruned now and looks much better - repotting will wait for a week or so as I won't have chance until then, but I've left the lower branch where it is so i can try and separate it when I repot. Thank you so much for your advice! Especially about where to prune, I've cut back to closer to the node line - I wasn't sure how much space to give it but it makes sense to cut closer. Ideally I'd like some grow lights too but not really in a position to get them at the moment.

That's the diameter about 2 inches above the soil - it has branches coming out at the soil line (in the pic it's coming right towards the camera) so it's pretty big! In the future I might remove the lower branches, but at the moment I'm happy enough with the shape I think.

Repotting in a week or so sounds good, and it is best to separate plants then. I think it will be easier to do any further pruning of large branches later - as you may decide on shape you want the plant to be in. And as they grow, they will make great new plants when you prune! :)

Rhiannon, how did this plant recover? I would love an updated pic of it!