Police have released an image of Westminster attacker Khalid Masood.
Masood was previously known by the names of Adrian Elms and Adrian Russell Ajao, and may also have been known by a number of other aliases.
Detectives are continuing to search two addresses in Birmingham and one in East London linked to the investigation.
Searches of other properties in Brighton, Southeast London, East London, Surrey, Manchester, Carmarthenshire and Birmingham have concluded.
A total of 11 people have been arrested as part of the investigation on suspicion of preparation of terrorist acts.
Ten remain in police custody.