Terror suspect Mohiussunnath Chowdhury, 26, is accused of driving a blue Toyota Prius at a marked police van on Constitution Hill on the evening of August 25 last year.

It is alleged that he then reached for a four foot long samurai sword he had stored in the well of the car, but was sprayed with CS gas and arrested as he shouted ‘Allahu Akbar’.

Terror suspect Mohiussunnath Chowdhury, 26, is accused of driving a blue Toyota Prius at a marked police van on Constitution Hill on the evening of August 25 last year (This sketch of Chowdhury was taken during his last appearance in court)

Terror suspect Mohiussunnath Chowdhury, 26, is accused of driving a blue Toyota Prius at a marked police van on Constitution Hill on the evening of August 25 last year (This sketch of Chowdhury was taken during his last appearance in court)

Two officers were taken by ambulance to hospital with minor cuts and discharged a short time later. A third injured officer did not require hospital treatment.

As part of the attack Chowdhury wrote a suicide note, it has been claimed.

Today he appeared at the Old Bailey via video link and pleaded not guilty to one count of engaging in conduct in preparation of terrorist acts contrary to section 5 of the Terrorism Act 2006.

Due to communication breakdown between the court and high security Belmarsh prison, the court was not able to hear the defendant, but he was able to hear the proceedings.

These scene outside Buckingham Palace after the incident. Two officers were taken by ambulance to hospital with minor cuts and discharged a short time later

Prison staff wrote out a number of signs with pieces of paper with the words of ‘yes’, ‘no’, ‘guilty’ and ‘not guilty’.

Chowdhury was wearing a prison issue jumper and used the pieces of paper to confirm his name and enter a plea of not guilty to the single count.

The charge alleges that he obtained a samurai sword, purchased a knife sharpener, prepared a suicide note and ‘drove to the area of London adjacent to Buckingham Palace’.

Mrs Justice Ceema-Grubbb said: ‘This case will be fixed for trial to commence on June 18 this year, with an estimate of seven days.’

Chowdhury, of Luton, Bedfordshire, was remanded in custody to appear at the same court for his trial on June 18.