Two more 'significant arrests' over London attack.

Armed police outside Westminster underground station in central London following the terrorist attack on Wednesday Source: Press Association

Two more people have been arrested over Wednesday's terror attack in London, police said on Friday, also giving the attacker's birth name as Adrian Russell and appealing to the public for information about him.

"We have made two further significant arrests overnight," counter-terrorism commander Mark Rowley said, confirming that there are currently nine people in total in custody over the attack.

One woman arrested earlier was released on bail.

Police had earlier named the attacker as Khalid Masood but said he had been using "a number of aliases".