The suspected terror attack outside Parliament was the first major test of the "ring of steel" around the area since last year's Westminster Bridge terror attack.
The effectiveness of the crash barriers, and the speed with which armed police reacted, suggest the precautions did their job.
• Subscribe to ITV News on YouTube: [ Ссылка ]
• Get breaking news and more stories at [ Ссылка ]
Follow ITV News on Facebook: [ Ссылка ]
Follow ITV News on Twitter: [ Ссылка ]
Follow ITV News on Instagram: [ Ссылка ]
