An Islamist extremist shared a home-made video of London’s Royal Festival Hall with the message “attack, attack”, a court has heard.

Shehroz Iqbal, 28, from Ilford, is on trial at the Old Bailey as he is accused of encouraging terrorism by posting the video to a group of ‘like-minded’ friends on Whatsapp.

Opening the case, prosecutor Kate Wilkinson described Iqbal as someone with extremist views who is “volatile and prone to act in his extremism”.

On March 11, he visited the Hayward Gallery on the South Bank, near the Royal Festival Hall and Waterloo Bridge, the court heard.

He spent about an hour and a half at the site and made a video on his phone.

Ms Wilkinson said: “It was a calm video, it was short and its message was clear.

“It spanned from across his vista as he stood there at Hayward Gallery and focused on the traffic passing on Waterloo Bridge, and then he spoke rather chillingly.”

In the footage played in court, Iqbal allegedly said: “This is my spot Akhi (brothers) Central London. Attack, attack.”

Ms Wilkinson told jurors: “The Crown say this was the defendant telling his ‘brothers’, his like-minded associates on his WhatsApp thread, that this place, Royal Festival Hall – Hayward Gallery – Waterloo Bridge, was his ‘spot’, a very public popular attraction.

“To do what? He goes on to say ‘Attack, attack’.”

The court heard the video was posted to a WhatsApp group with 22 people called ‘From Dark to Light’.

Ms Wilkinson said Iqbal would deny posing a threat or wanting encourage people to feel threatened by his acts.

But she added: “The Crown say that when he chooses that is exactly what this defendant wants people to feel.”

A second video was also played at the court which was recorded on the London Underground in September last year which showed a man sitting and reading a newspaper while a male voice shouted: “racist fucking bastard”.

But Iqbal has denied encouraging terrorism on WhatsApp and disseminating terrorist material on Facebook.

The second charge relates to a propaganda video depicting Islamic State fighters in 2015 posted just as the nation went into lockdown in late March.

The court heard that the video, which featured an image of a dead body, was viewed more than 200 times on the defendant’s Facebook page.

When he was arrested in April, he claimed he was high on drugs when he posted the Facebook video without looking at it.

His explanation for the video at the Hayward Gallery was that he went for a ride that day and made the film to show off his bike.

But Ms Wilkinson told jurors: “The Crown suggest that was a video not showing off his bike but rather saying to his friends ‘Look what I might do’ – carry out an attack in central London in a public spot just like the Royal Festival Hall or Waterloo Bridge, just as others who shared his extremist Islamic views had done before on 9/11, in Manchester and on London Bridge.”