I've never been able to find one. A shame, as it's usually a very good puzzle. I'm guessing you're based in NZ The only way I know is to get someone to scan it and upload it somewhere or email it. But you can see by how few threads appear on here about it that few people buy the paper.
With just about every other Advanced Cryptic having online access, it's a pity the Independent doesn't join the 21st century. Even their dailies don't seem to be archived.