Buy To Let Mortgage Uk Let To Buy Mortgage (UK)?

Let To Buy Mortgage (UK)? - buy to let mortgage uk

I was informed by a friend, we buy mortgages, which still exist. I agree that continue to pay the existing mortgage, but rents covering the mortgage. You can then a mortgage on a new property and live there!
Any general tips and Web sites that can help (including providers of these mortgages) would be appreciated!