I had a request from a mortgage broker for a SA302 for one of my clients, normally you have to request this from HMRC and it can take a couple of weeks to arrive in the post.
I have just spoken to HMRC and as from January this year, an agreement had been accepted for the downloaded version of a clients SA to be allowed.
This makes things so much easier and quicker all round.
I've just applied for a mortgage myself through Halifax and they insisted that I had an actual SA302 as opposed to a printout from the website, although they ended up accepting a faxed copy with my UTR blanked out?!?!?! Seems daft!