Would you like to discuss your character's religious affiliations, or just religion in the Regency period generally? Are you curious about what your character's religious affiliation might be? Here is a space for those purposes!
In England in our alternate world as it is currently set up (see the thread about equality), King James II passed the Act of Indulgence with additions about homosexuality and gender fluidity. William and Mary still repealed the parts of this Act pertaining to Christianity, and issued their Act of Tolerance offering official Anglican doctrine for Christians in Britain, but delegated power to Parliament (as they did in the real world), and did not take the step of actually not allowing Dissenters and Catholics to worship. However, in this world Parliament immediately made use of that power to pass legislation allowing anyone of any non-Christian religion to practice and have full rights in terms of standing for Parliament or teaching at university, etc. Currently it is being debated politically as to whether to extend these rights to Dissenters (Unitarians, Universalists, Baptists, etc.) and Catholics, creating an odd situation where Dissenters and Catholics are staunch political allies despite agreeing on nothing. Presumably most in the nobility and upper classes are either Anglican or not Christian at all, but perhaps they still believe in religious equality and are campaigning for it, and there may be some brave souls who will court scandal for their beliefs. (And thanks so much to the game creators for making a space for me to do something fun with my master's thesis research for once!)