A student is unable to return, for very practical reasons, which is a great shame. They are very reliable, and I have offered to take them back again, if they wish, at a later date. I have an exam certificate, which for some reason, they want me to keep until they do come back. I don't mind for a couple of weeks, but I would much prefer to post it to them, and have made it clear that sending them the certificate would in no way affect the student starting lessons again. The certificate is their property after all. I have never had this before, as people are usually very keen to collect certificates!
If anyone has any suggestions? Unfortunately, I did have their address, but have since mislaid it.