Jihadi attack on UK ‘inevitable': Police fear a beheading by ‘lone wolf’ in shopping centre and farmers are told to lock up fertiliser to foil bombers

Jihadi attack on UK ‘inevitable': Police fear a beheading by ‘lone wolf’ in shopping centre and farmers are told to lock up fertiliser to foil bombers 

Britain is facing an ‘almost inevitable’ attack by fanatics who have been ‘militarised’ by Islamic State, according to police and security officials.

In speeches today, Theresa May and senior police will warn that the ‘diverse’ terrorist threat posed by jihadis returning from Syria and Iraq is one of the greatest this country has ever faced.

Potential attacks could range from a ‘lone wolf’ beheading in a crowded shopping centre or street, to a bomb plot using fertiliser stolen from British farms. One Whitehall official told the Mail: ‘It is almost inevitable that something is going to happen in the next few months.’