We know it's a joke, but a newspaper in Pakistan didn't, and actually ran this story as if it were for real.
http://english.alarabiya.net/en/media/2014/03/10/Saudis-banned-from-Harr...

You can still see the story on their online print edition, complete with phrases like:
“Banning Arabs from Harrods may not create a big political or strategic upheaval but it is definitely an insult no rich Arab sheikh or emir would take lightly,”
http://e.thenews.com.pk/3-10-2014/page4.asp

When the Pan Arabian found out that there are people who were believing what they were writing, they said:
“It is a testament to the growing reach of our satirical work that publications such as Pakistan’s The News International are now turning to us as a provider of up-to-the-minute fictitious news. We applaud their decision to trust our journalists enough to not change a single word or even bother to check whether our sources exist or not.”