Shortly before dawn on 10 August 2006, the top executives of Britain's airlines were telephoned to be told their passengers would be banned from carrying anything more than a purse or wallet into an aircraft cabin. read more
First of all, liquids are allowed in a flight but the liquid has to be less than 100ml if I'm not mistaken. And as far as taking more than that of liquids in a flight is concerned, well its for your saftey. read more
A relaxing of the rules is slowly happening, however. Since January 31, 2014, transit passengers have been permitted to take sealed duty-free bags (containing liquids above 100ml) through security. read more