Labour leader Ed Miliband struggled to name the cost of a weekly shop for a family of four, putting his own family's grocery bill at "£70-80 a week".
Asked on ITV's Good Morning Britain about the average weekly household grocery bill, Mr Miliband responded: "It depends on how much you are spending."
The weekly average spend per person on food and non alcoholic drinks came to £25.98, adding up to £103.92 for a family of four, according to the 2012 Family Food report from the Department of Environment, Food and Rural affairs.
Mr Miliband, who is married with two children, admitted to being "relatively comfortably off" but was adamant Labour were "determined" to tackle the issues facing the general public.
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Armed police have carried out a raid apparently linked to Wednesday's deadly terror attack in Westminster.
Cheryl Grimmer vanished from inside a beach shower block in Wollongong, Australia, in 1970, when she was just three.
Pc Keith Palmer was on the front line and because of his actions, the Westminster attacker was unable to kill anyone else.