Short answers, pulled from the story.
The year 70 CE marks the probable arrival of Jews in Roman Britain, though no definitive evidence confirms their existence. Some traditions from Caerleon suggest two Christian martyrs named Julius and Aaron may have had Jewish origins.
Edward I legislated the expulsion of all Jews from England by 1290 after issuing the Statute of the Jewry in 1275 which forbade moneylending and restricted movement. Most could only take what they could carry while their properties were confiscated.
Aaron of Lincoln became the wealthiest man in 12th century Britain with debts exceeding £15,000 at his death in 1186. His estate passed to King Henry creating a special branch of the treasury known as Aaron's Exchequer.
The Kindertransport saved around 10,000 children from Germany before World War II began. Nicholas Winton earned the nickname British Schindler for his efforts during this operation.
Lionel de Rothschild was finally allowed to sit in the British House of Commons on the 26th of July 1858 after changing the oath restriction. By 1890 Jewish emancipation was complete in every walk of life.