Churchill in his personal sentiment was a Semito-phile (did I just invent a word?). On the other hand, though he was reluctant to sign the White Paper, and railed against it while an MP, in the end he did so, and instructed the Foreign Office to enforce it rigorously, using lend-lease equipment from the US meant to fight Hitler.
The Moroccan royal family has been a friend to Jews for centuries.
About Churchill: Here are a couple of more quotes from the link I posted above:
● As First Lord of the Admiralty (1939-40), Churchill instructed Royal Navy vessels not to intercept ships suspected of bringing illegal Jewish immigrants to Palestine.
● In February 1942, Churchill argued successfully in the War Cabinet — and in the face of opposition from the new Colonial Secretary, Lord Moyne — to release from internment approximately 800 Jewish refugees from the Darien II, who had reached Palestine.
● That same year, Churchill overrode Foreign Office objections to a proposal for permitting 5,000 Bulgarian Jewish children to travel to Palestine. (The War Cabinet approved, but the move was blocked by German pressure applied on Bulgaria).
But the British FO and the Secret Service were ever since oil became important for the RN very Arabophile. That together with the "social Antisemitism" (see Wallace T, post 12) of the British establishment made it very hard for Churchill to push through his pro-Jewish policy.