Thought you all might find this interesting, since it's somewhat relevant to this thread.
I was just chatting to my friend today who said our mutal now has UK citizenship. I thought, "But wait, he came on an ancestral visa and has only been here for like two years? How can that be?" He didn't have ILR, just the ancestry visa.
Turns out, he was entitled to UK citizenship all along. He applied for the ancestral visa since he thought he qualified, was approved, moved here, and then one day decided to look at citizenship requirements. Turns out, he qualified all along and should have never come over on an ancestral visa.
Not that his is news to anyone, but the Home Office just don't seem to know their own rules.
Thought some of you may find this interesting.