I have a Pouchlings ring sling that I've been meaning to sell. I've used four different slings/carriers over the years and found this one to be the best. Really easy to use and you don't need any help getting the baby in or doing it up - it was brilliant when I travelled long haul by myself and had to juggle bags etc.
It's in very good condition with one small mark on it. It's tan in colour with a purple border at one end. Happy to email you a photo.
http://www.pouchlings.com/Ring-Slings-Deluxe.html
£18. Collection from SW11, off Lavender Hill.