Seven hours, one cabin, no connections
London to Dubai is about 3,400 miles, which a heavy or ultra-long-range jet flies non-stop in six and a half to seven hours. Dubai runs three hours ahead of London in summer and four in winter, so the classic pattern is a late-evening departure that lands early the next morning, rested, with the whole day ahead.
The private terminals at both ends do the rest. In London you drive to the aircraft at Farnborough or Luton and are airborne within fifteen minutes of arriving. In Dubai, passport control and customs happen inside the FBO lounge, and the chauffeur is waiting on the apron side of the door.
Because the route is flown so often, aircraft based in London, Dubai and the Gulf are all in play, which keeps pricing competitive and usually allows a departure within twenty-four hours of your request.