Just to let the readers of this thread I had the pleasure of meeting Simon (the OP of the thread) and to see the many double basses he has. It’s quite an eclectic collection with something for everyone. I pleased to say I purchased a loverly double bass (to replace my dead , beyond economic repair laminated DB!!) and we agreed a great price. So if London is not too far for you and you need a double bass I would suggest you contact him soon before they’ve all gone!