England has barely any claim at all on the condition of being secular. It is not at all secular except in the etymological sense, secular is a word from ancient Latin meaning "outside of Rome" or "worldly, other, outside and foreign with relation to Rome and the race of Italians". England, if it was Roman and if it spoke Latin, would be catholic, which is a specification of insular nationalism specific to the nation and race of Italians. All true countries are catholic, Israel is VERY catholic, Greece is catholic, Spain is catholic, and all truly conservative posterity oriented American original intent political thinkers are colonial catholic separatists. In the English language of course, England is termed Anglican, and has always been Anglican. Every nationality has its own word for cohesive loyalty.
Your statement that the Church of England is apostate is totally absurd, literally to the point of being almost meaningless. There have been civil wars in England as there was in the United States, and Christian on Christian violence sadly exists. However, the word apostate literally means that "they murdered the apostles", of whom there were only twelve. The people guilty of this crime were some Roman traitors led by Brutus, who first killed the state leader, and whose surviving followers had first murdered Jesus Christ. The fall of Republican Rome after the Civil War was characterized by race mixing, primarily between the Roman Cabal and some Persians, as had the fall of Greece been after the death of both Alexander and Socrates.
You are supposed to be catholic. It's not a form of racism, it's conscious and mature self-awareness, of your heritage, your national status, and both yours and your countries context historically, linguistically and geographically in the seculorum (whole and entire planet). It also includes knowledge of your personal family's place in the country you belong to and understanding of civic duty as well as other public and private virtues, which are defined as religious in absolutely every culture that exists, not just the Catholic, the Hebrew, and the Christian.