Here's what I know about that:
On the other hand, Israelies:
I don't know if actions of British lead Jordanian units were sanctioned by the British government, but I do know:
Clearly the Brits were hoping to keep friends on all sides, and help make Britain's various partitions of the old Ottoman Empire work as nations.
The Brits also deserve some credit for the 1917 Balfour Delcaration, and for help to Jews in general.
Sure, if like many, you feel that such aid was grossly inadequate, the fact remains it compares favorably with aid from other countries -- Franklin Roosevelt's USA notably.
For a more favorable view of British relations to Jews, I recommend Martin Gilbert's "Churchill and the Jews, a Lifelong Friendship".
Yes, I have to recognize the following claim:
But first, I doubt if it's true, even today, and second to whatever degree true, it surely reflects influences of those countries' Muslim populations.
Or perhaps just of anti-Israel posters at Wikipedia!
Finally I don't see, how can this particular incident in 1948 cause you to blame the Brits for starting the First World War in 1914?
For a while France was a great friend of Israel. Many of Israeli Super-Shermans came from France, where the French built a copy of the Panther 75mm gun and mounted it onto the Sherman. (The Panther 75mm gun had better armor penetration than the German 88mm or the US 90mm guns.) They also provided Mirage jets, and would sell ships to Israel when the US wouldn’t.
The 1956 Suez Crisis had Israel invade Sinai while Britain and France invade along the Suez canal. At least in that part of the 1950s France was an Israeli Ally.