The government's food watchdog has published a massive database containing details of the nutritional content of the UK's most popular foods - but insists it will not use it to name and shame manufacturers.

The database was compiled by Food Standards Agency researchers between December 2004 and February 2005 and lists the salt, fat, sugar and energy contents of 1,000 processed products in 31 categories.

The FSA, which posted the database on its web site earlier this month, said it was expecting to update it and could include more products. A spokeswoman said: "It's a resource tool to inform the FSA's work."