Thanks for that, yes it does look similar. It's certainly the closest match I've seen to it. If it is, mine's not a very good example of one that's for sure.
It's on a windowsill and gets very little direct sunlight, half an hour a day perhaps. (I've just had a look and those types of plants do best in full sunlight, so that's my first mistake!) Do you know if it would be ok for me to pot on with general potting compost? I'm desperate to put it in a bigger pot but really don't want to kill it off.
Thank you again,
Debs