Did the British force people to convert to Christianity for them to enjoy the benefits of being subjects of the monarchy?
How far back in history do you want to go? Plenty of battles within Christianity in British history. E.g. King Henry VIII didn't accept the authority of the pope and led the Church of England away from the Roman Catholic Church. https://en.wikipedia.org/wiki/Church_of_England#Separation_f...
A few generations later, things got pretty dicey for the remaining Catholics:
England’s Elizabethan Catholics were public
enemy number one. Their Masses were banned
and their priests were executed.
Did the British persecute Catholics when they were in an imperialist/expansionist mode around the world?
To the best of my knowledge, that didn't happen. The British Empire in its quests wasn't concerned about anti-Catholicism and disdain for the authority of the Pope, it was primarily driven by political/financial gains. On the other hand, for the Ottoman Turks it was all about Jihad and the subjugation of non-Muslims in newly conquered territories. The persecution and discrimination against non-Muslims for the subjects of their realm was one of the founding principles of taheir rule and public policy.
How far back in history do you want to go? Plenty of battles within Christianity in British history. E.g. King Henry VIII didn't accept the authority of the pope and led the Church of England away from the Roman Catholic Church. https://en.wikipedia.org/wiki/Church_of_England#Separation_f...
A few generations later, things got pretty dicey for the remaining Catholics:
http://www.historyextra.com/article/elizabeth-i/elizabeth-i%...