It's all a bit confusing in the CofE. The 1662 BCP was the de facto standard until the 20s. In 1928 they attempted to get an alternative prayerbook (a revision) approved. It passed in General Synod, but not in Parliament, but was still used, de facto anyway for a while. From the 40s-70s, Liturgical revision was rampant (there's an excellent case that could be made that it was the Church of England's liturgical reform that spurred many of the actions at Vatican II for Liturgy, actually, even if they'd deny it wholeheartedly) with three primary service books, known as Series 1, Series 2 and Series 3. Series three morphed into the Alternative Service Book 1980 in, unsurprisingly, 1980. Then over the next 20 years, various alternatives were thrown around, including 'Principles for Worship' which was the change to inclusive language and developed 'A Service of the Word', a flexible framework for less liturgical services. In the 1990s, it was attempted to bring all this revision together into one book, CW, which has a huge wide variety of options, all the way from 1662-ish, all the way through to very contemporary language, designed to be used by both incredibly low-church evangelicals through to high-church Anglo-Catholics and all the variance there is in between. If you want more details, I can provide a copy of my dissertation, which has a fairly significant history of the changes between 1980-2000.