Can I be naturalised as a British citizen?
If you are over 18 and have been living in the United Kingdom for the last five years (or three years if you are married to or a civil partner of a British citizen) you may be able to apply for naturalisation as a British citizen.
在home office的官方网站上看到了这段话。想请问一下,这个5年适用于什么样的情况了?是只要任意呆满5年就可以,还是这5年必须是工签之类的?British citizen是指PR还是英国护照了?谢谢