• A House of Lords committee points out that despite several requests the government has failed to offer anything more than anecdotal claims.
• The European commissioner for employment and social affairs said: "It is important that policy ... is based on facts rather than gut feelings or perceptions."
• A further report concludes that any measures restricting the free movement of migrants would have a devastating effect on the British economy.
See also Channel 4's FactCheck report ‘Benefit tourism scare sent packing' from September 2011.
