Listing his case for trial on 6 November, Mr Justice Holroyd said: ‘It may be in your interests to have a professional lawyer in this case.’

Justice Holroyd relisted the case for a further hearing on 9 June.

Bearded Ali, from Tottenham, north London, is charged with one count of preparation of terrorist acts and two counts of possession of explosive substances.

Ali has previously stated that he does not recognise the charges against him.

He was flanked by two officers in the video link booth