The Financial Services Authority (FSA) is set to ban mortgages which do not require borrowers to submit their true earnings to lenders.

Designed to help the self-employed, contract workers and those with more than one source of income, there are currently only two such mortgages available today, both from Platform, a subsidiary of Britannia Building Society .

The credit crunch has brought about a decline in the products and financial advice website Moneyfacts believes that the FSA will put an end to them when it releases its mortgage market analysis next week.

Darren Cook, spokesperson for the site, said: There would have been a place for self-certification mortgages in the market, but only if the product was prudently assessed for realistic declarations and sold to people whom it was originally designed to assist in the first place.

Moneyfacts recently said that while first-time buyers were once the lifeblood of the mortgage market, lenders are turning towards those with more money and less risk.