Above is not true. Shortest distance between Hong Kong and London is just under 6000 miles, which is roughly 9600km.
Hong Kong is 8252 miles away from London. If you convert it into kilometers then you can say that Hong Kong is 13 280.3067 kilometers aways from London. For authentication of it, please visit the link below.
www.mapsofworld.com
www.mapsofworld.com