From the project website (accessed 2017-01-09):
Since 1980 Omnibus, a 32-page journal aimed at those in the final years of high school or starting university, has been published twice a year, initially by the Joint Association of Classical Teachers and now by the Classical Association. Each issue has included, among other things, around 10 1500–2000-word articles on central, and some less central, topics in Greek and Roman literature, ancient history, ancient philosophy and classical archaeology. Many of the great names in UK Classical Scholarship active in the last 45 years have contributed.
The archive contains over 750 articles from issues 1-71 and will be updated annually. For copyright reasons the illustrations are not included.