Flight Guangzhou Baiyun International Airport departs from Guangzhou Guangzhou Baiyun International Airport at 13:30 and arrives at London London Gatwick Airport at 19:10.
The flighttime is about 12h 40m. The distance travelled ("as the bird flies"): 12306 Km. So the average speed is roughly 972 Km.
There is an 7 hour time difference between Guangzhou and London