Testimonial..
"Given that the income is tax-free, the return on £14,000 investment is equivalent to 12.9% for a 50% tax-payer and 10.3% for a 40% tax-payer, with the investment recouped in as little as seven years. As the payments are linked to RPI, this equates to a real return of 18.2% and 15.6% respectively at todays RPI rate of 5.3%"
You have to pay, but the government pays you back over the years..which makes them FREE