Ooo, I’m glad someone asked this question!
AOne, like Tesco CD-Rs, are indeed produced by UmeDisc. Although agreed with Pepst I don’t trust no-name brands, the mix of AOne and Tesco branded discs (Well over 75 now) have all been excellent - Far better than the godawful CMC and Ritek discs I’ve used. (Bulkpaq, ARITA :Z Datawrite Titanium, et al)
Although I don’t tend to use them for important stuff, they have been excellent discs for me - No skipping when making audio CDs, no read or write failures. Tesco although not great have proven to many users their discs are actually alright