Eyewitness News UK correspondent Gavin Grey says it's business as usual in London as both houses of the British parliament will sit on Thursday.
Five people died, including a policeman and the suspect that was involved in a terror attack outside of parliament on Wednesday.
At least 40 people were injured after the assailant drove his vehicle into pedestrians walking across Westminster Bridge.
Grey says there is still high security in the area.
Overnight there were dramatic raids, six raids on different addresses, seven arrests an hundreds of detectives working overnight.— Gavin Grey, Eyewitness News UK correspondent
As I speak to you near the river a boat full of policemen in inflatables and one looks like he is armed.— Gavin Grey, Eyewitness News UK correspondent
These are scenes you do not see every day there is no doubt that police presence is increased today.— Gavin Grey, Eyewitness News UK correspondent
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This article first appeared on 702 : Increased police presence, several arrests as UK parliament opens for business