That particular flight - DI7013/4 has had a very bad few days as the Hi-fly A330 seems to be very broken at Gatwick. It's been operated by Norwegian here and there with very long delay (as the crew have needed rest in NYC each time before coming back)

Today it's being operated by a rare aircraft - Hi fly A340-500 - complete with lie flat seats and a bar! Nice upgrade for those up the front ! Shame about the long delay. So this rotation looks like the one to avoid