最新报道：据路透社，英国下议院领袖：袭击嫌疑人已被武装警察击毙，开枪前碾压5名行人，目前，已有至少12人受伤。
英国伦敦警察：英国议会大厦事件作为恐怖袭击处理。
据英国天空新闻4名男子躺在威斯敏特大桥上，失血严重且失去知觉。
【事件概况】英国伦敦威斯敏斯特议会大厦附近突发两起事件，一起是轿车冲撞行人；另一起是持刀歹徒攻击议会大厦执勤警察，案发地点临近议会大厦靠近议员办公大楼一侧。
据悉，每周三中午是议会下院首相质询时间，也是一周间议员最集中的一天，案发后，议会大厦临时关闭。首相特蕾莎被至少八名全副武装的便衣警察护送进入一辆黑色车中离开，其中一些人手持枪支。当时现场仍有巨响传来，但尚不清楚响声是否是枪声。
据BBC快讯：英国议会大厦外发生枪击事件，议会大厦暂时关闭。
据外媒报道，英国议会外，有两名人员遭到枪击，议会大楼已被关闭。目击者称医护人员正在对遭枪击人员进行治疗。
图片来源：The Sun
图片来源：The Sun
英国议会所在地威斯敏斯特宫。威斯敏斯特宫钟塔就是伦敦著名景点大本钟。
据BBC快讯：英国议会大厦外发生枪击事件，议会大厦暂时关闭。
据英国议会官员介绍，在英国议会外有两名人员遭到枪击，议会大楼已被暂时关闭；英国警方封闭了伦敦议会大厦周边的街道；路透援引目击者称，医护人员正在对两名遭枪击的人员进行治疗 。
据BBC报道称，事发现场已经有数人受伤，警方已要求伦敦地铁临时关闭威斯敏斯特站。
目击者说，袭击者持刀攻击议会大厦外警员，并试图闯入议会大厦内，在一名警察受伤后，现场其他便衣警员持枪及时阻止了袭击者。
目击者说，袭击者持刀攻击议会大厦外警员，并试图闯入议会大厦内，在一名警察受伤后，现场其他便衣警员持枪及时阻止了袭击者。
太阳报英文原文报道：
TERROR IN LONDON
Parliament shooting – Knife maniac shot by cops outside Parliament after stabbing officer in terror attack as at least 10 pedestrians are injured when car mows them down on Westminster Bridge
Prime Minister was in voting lobby at the time of the attack and bundled into a car
A MAN wielding an ‘eight inch’ knife has been shot outside Parliament after charging the gates and stabbing a police officer – with cops declaring a ‘terror attack’ in the capital.
Up to a dozen innocent pedestrians were mowed down on Westminster Bridge by grey 4×4 which then crashed into the gates outside Parliament.
Dramatic pictures show bodies littering Westminster bridge and the vicinity outside Parliament.
Two people have been seen lying within Old Palace Yard, immediately outside Westminster Hall.
Earlier reports suggested sounds of an explosion were heard but this has not been confirmed.
Commons Leader David Lidington told MPs: "What I am able to say to the House is there has been a serious incident within the estate.
"It seems that a police officer has been stabbed, that the alleged assailant was shot by armed police.
"An air ambulance is currently attending the scene to remove the casualties.
"There are also reports of further violent incidents in the vicinity of the Palace of Westminster but I hope colleagues on all sides will appreciate that it'd be wrong of me to go into further details until we have confirmation from the police and from the House security authorities about what is going on."
The Prime Minister was seen in the voting lobby at the time of the attack - she was bundled into a car and rushed from the scene with official sources saying she is unharmed.
Rob Smith was running past Westminster when he said he saw the drama unfolded, told Sun Online: (The) grey Hyundai car came across the bridge then across the cycle lane, hit a man on a bike and drive into the wall gates.
"Police ran straight out and shot him. I think there was another person but I can't be sure."
He said that officers had been drawing their guns as they ran out.
Another witness reported: "We heard a loud bang, lots of shouting and men running around.Someone rushed through, attacked a policeman."He appeared to be carrying a knife or a gun. We then heard gunfire, five or six rounds."The man approaching one of the police officers with a knife."
Another witness told Sky News a man was seen walking towards a policeman with a knife in his hand, having already assaulted another policeman.
A medical helicopter has landed outside the Houses Parliament to treat victims and a Hazardous Area Response Team has been dispatched.