].>> MPs expect to legislate on the threat of terrorism, they're not supposed to witness it. I'm Reuters' Jacob Green reporting from Westminster, now the scene of the bloodiest attack on British soil since July 2005. I spoke to some who were the there as the attack struck.
>> And suddenly we heard people shouting downstairs, and gunfire. And then a couple of minutes of later the House, the sitting was suspended in the chamber.>> Labour MP, Chris Bryant, was in Parliament at the time of Wednesday's attack set to vote on legislation. He told us of the unprecedented events inside as the deadly incident unfolded.
>> We were locked in the Tea Room for quite awhile. Special forces appeared and then decided that we had to leave the building. We were then kept outside for about a couple of hours. And then in Westminster Hall for another hour, and then three hours in Westminster Abbey.
>> Get back. Somebody's under fire.>> Bryant's story is similar to many lawmakers. As the heart of British politics went on lockdown, MP David Davies filmed the panic. A man armed with a vehicle and knife murdering those in his way. The nature of the attack forcing MPs to think about their security.
>> I don't think anybody's surprised. Everybody's shocked, but I don't think anybody's surprised. Because in a sense, a marauding attack of this nature was one of our biggest fears for a very long time. And I mean, maybe there will have to be reviews. Well, there's always a constant review of our security arrangements.
And I'm sure there'll be another one on the back of this.>> Lawmakers were already all too aware of the threats facing Britain. Now they have firsthand experience to draw on too.