The UK's home to some of the most generous income stocks anywhere in the world, with plenty of shares yielding 5% or even 6% for investors to explore right now. With just £5 a day, or roughly £150 a month, it's possible to start generating a genuinely useful £1,000 in annual passive income within just a few short years. Investing £150 a month at an 8% annualised return, in line with the stock market's long-term average, would grow into a portfolio worth roughly £16,817 after seven years. At a 6% dividend yield, that pot would generate around £1,009 a year in passive income. So which 6%-yielding income stocks should investors be looking at?