How many years can it take to get permanent residence in the UK after marrying a British person?

(1) Must have lived in the UK continuously for more than 5 years; (2) Be of good quality.

No criminal record; (3) Foreign women married to British citizens are given priority for naturalization; (4) Foreign children adopted by British citizens; (5) Have legitimate occupation and income; (6) Children born in the UK or on ships; (7)Have sufficient understanding of English