Why yes, the Brits have always displayed such friendliness towards the Jews, always. Not. Seems they are much more fond of Arabs disemboweling and beheading their citizens and soldiers, while supporting enormous Arab/Muslim families in their country with public funds, including supplying them housing and medical care. So this is something to really, really worry about.
Depends on what kind of Brits you mean. You think the Brits of today would have been behind the Balfour Declaration, especially given their attitude towards “settlements” today?
Those Brits you sneer at wrote the Balfour Declaration, took in tens of thousands of Jewish German refugees, stood alone against the Nazis whilst America stood by (and in fact stopped Jewish refugees from entering the US), liberated Belsen, and saved the lives of millions of Jews.