There’s a lot of competition on that route. I think BA are still running 772s which were originally piloted by the Wright Brothers. I like Gulf.
https://www.businesstraveller.com/airlines/virgin-atlantic/2018/06/27/virgin-atlantic-to-end-dubai-to-london-heathrow-flights/ That's the article confirming it, 31st March is the last day. Looks like with Delta in charge of the purse strings, the route is no longer viable...
Are they indeed? It'll be the 330 then rather than the 789.
Politics aside, just remember that in 2019 Virgin are stopping their Dubai route, so expect a dated plane which hasn't had the latest refit or entertainment system
Dubai is a good example on how to spend trillions of dollars building a city that is completely soulless. The only thing that seems to exist there is a culture of fear.