‘You here for the tour too?’ asked one of the men, fishing out a letter of invitation from his blazer pocket and unfolding it to reveal the embossed letterhead reading: HOUSE OF COMMONS.

‘No,’ he answered softly.

‘How old are you, son?’ said the man.

‘Seventeen.’

The man nodded his admiration. ‘Well, it’s good to see a youngster with an interest in politics,’ he said. ‘Makes a nice change these days.’

‘Oh, yes,’ he replied, his fingers caressing the twine in his hand. ‘I’m very interested in politics.’

He turned back as the queue moved closer to the large doors opening onto the grand corridor, where statues of statesmen through the ages lined both sides. Reporters and visitors were showing their credentials for entering the public areas before placing briefcases and bags on the X-ray machine and then stepping through the detector.

The group of young women was stopped by a whiteshirted security guard and asked about the purpose of their visit. They named their MP and showed their letter of invitation and were allowed to move into the corridor towards the security checks.

The new shoes were pinching slightly, chafing his heels, but nothing could stop his joy as he stepped over the ancient threshold of Parliament, where a security guard was waiting to question him. ‘And what business do you have here today, sir?’

He smiled at the security guard and whispered a single word: ‘Martyrdom.’

The guard leaned closer. ‘Sorry, sir, what name was that?’

He didn’t reply, but pulled sharply at the twine that ran up his arm. St Stephen’s Entrance erupted in a hail of flying glass, shattered statues and broken bodies.