Since the CoE is the established state church in England, it is natural that the Royal Family should regularly attend CoE services associated with official public celebrations (like the RAF Centenary or Commonwealth Remembrance days). What is being discussed in this forum, however, is whether royals attend regular church services as private citizens and not in connection with any official function. I think the overall impression is that the Queen does,.
Yes, she is a regular church goer and a devout Christian...