What are the beliefs of the Anglicans? I don’t know much about them, but this is very interesting.
Why do they want to be a part of the Catholic Church?
I doubt the UK Anglicans under Rowan Williams could answer that. They can barely define (as an organisation) what they do and don't believe, except that whatever they believe must be inclusive.
So they have ended up with a "spectrum of belief". And that spectrum is so ill-defined that it includes pantheism, and doesn't necesarily include the divinity of Christ.
Many Anglicans (especially non-UK Anglicans) believe in God, Christ, the sacraments. Others don't know if God exists or not - and some also believe that whether He exists or not doesn't matter. I have met these wierd beings: they were studying Theology.
The current state of the Anglican 'Church' is about as big a tent as you can possibly imagine, as it will not exclude anything as non-Anglican. Including, in William's own words, Shariah law.