There’ve been a number about for a few years now, but the proliferation of Virgins is now a source of potential confusion, particularly for travellers to Australia from the UK.
If you look on fare comparison sites, you may spot two different fares from Virgin. The UK-based Virgin Atlantic still flies from London to Hong Kong and on to Sydney, but Virgin Australia (which is now rather more loosely connected to the Virgin group) also flies from Australia to Abu Dhabi from where it codeshares with Etihad to the UK. Many of the flights sold from Australia to Abu Dhabi with Virgin Australia codes are actually operated by Etihad as well. Unless it is important to you to fly on one sector with Virgin Australia, you should also look at the fares being offered by Etihad since they may be different.