Lula, I have Boris listed on the Cat Chat website for you. In order to do this the lister has to be a rescue owner which of course I'm not, I'm a network rescuer, but I do know the requirements and procedure of rescue of course.
These generally include the completion of a questionnaire by the prospective adopter, a homecheck by the rescue and a commitment to take the cat back from the new owner if at any stage in his life they are unable to care for him any longer.
I have committed to offering these personally if the advert brings forward any interest in Boris and I will, provided you are satisfied with the prospective owner, send Boris out on a rescue contract between me and the new owner to reflect that.
Remembering that Cats Protction won't take him because of his age and neither (I've checked) will Celia Hammond Cat Rescue, plus that my initial appeal has received no response the biggest chance you can give Boris is to offer to insure him by direct debit - a quick whizz through Sainsburys insurance, for example, shows a premium of £20 per month (far cheaper than £1.4K to fly Boris out to Oz and then quarantine him afterwards!). If you are willing to do that I will put another appeal out - this will make it far more likely that he will find an offer of a home or, failing that, at a foster-based rescue, where he is not placed in a pen.
The alternative, as you know, is not a happy ending... and I won't allow that to happen, not if I can help it, bless him!