Thank you for the speedy responses, much appreciated! Thank you for the identifications Imontestella - very helpful! I did wonder about the glass jars, they are very decorative but I was worried they may not be the most suitable potting option. I will definately consider re-potting, maybe once I've done a little bit more reasearch. I am living in the South East of England, and the plants are currently on a South facing window sill. Taking your advice rina, I shall move them to a location with less sunlight until I've put them in more appropriate containers. Thank you again for the comments!

Hi Chelsea. If no-one else answers, create a new thread. I reckon that more people would be likely to check it out. Lovely looking plants :) Funny how it's so similar to this thread, even the plants lol. I could give only some advice but I think it would be better not to do anything with the plants until your ready with everything at hand from the suggestions from others here that know a lot more than me. First thing I'd do is to get some pots that have large drainage holes. You might be advised to get one a bit bigger for the bottom right one. You'll definitely be told/advised to get a pot for the one in the glass. Also the mix advised above is what probably most here use. Half cactus and Succulent potting mix and half perlite, but the Perlite needs to be sieved or rinsed first. Both can be bought at garden centres and places like that. I hope it all goes well for you and your lovely plants :)

Over time the lack of drainage will be detrimental to your plants' health. They look very nice now, and I love those chunky pots, but if they have no drainage, it's not beneficial. Stones/gravel won't help. If you have a drill, you can drill holes in the pots with the proper bit (see youtube for this). Sorry to say, but if you want the plants to do well, you should repot. Pot sizes look good except #1 could be upsized slightly. When you repot, don't pot them low in the pot. See #8, it looks a little low. You don't have to buy expensive pots--plastic or terracotta are fine as long as they have holes. As for the soil, commercial cactus/succulent mix combined 50/50 with perlite or pumice will make a fast draining soil. Run the perlite through a strainer with water to get the small particles out and do not breath the dust. Pumice is a better bet than perlite. Are you keeping them outside or inside? I don't know your zone, but they will want many hours of full sun every day except the haworthia which will do better with less sun than the others. Transition over a period of days into full sun if they aren't getting it now. I hope this isn't overwhelming, it's just that the pots, while beautiful, aren't good for your plants. Good luck.

Dominique - it looks like your plant was rooted in one of those peat cells. Something like Jiffy peat pellets. You add water and they grow and are held together by a supposedly biodegradable fabric. (I have found those fabric cells in flower beds years after planting.) I once received a community pot that had all the plants in these peat pellets. It is not good for the plants, so you need to remove the peat from the plant's roots and repot using a well draining mix for your plant.