Margaret Hodge, who chairs the committee, has accused the DWP of making "poor decisions" at "considerable cost" to the taxpayer.
The report found that the department's decisions were overturned in nearly 40 per cent of appeals, and that Citizens' Advice had recorded a more than 80 per cent rise in the number of people asking for support on appeals in the last year alone.
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The video, obtained by ITV News, shows scores of migrants desperately trying to board lorries in a restricted area within the tunnel.
Ex-Spitfire pilot Allan Scott, 94, said he was told off by the Queen when he first met her in 1943 when she was just 16.
Last minute preparations are going on at the Church of St Mary Magdalene where Princess Charlotte will be christened.