The court's freezing order means the MQM founder and his associates could stay in the properties till the court decision on the case but these properties could not be sold.
An anti-terrorism court (ATC) Islamabad has been directed to provide details of the case, whereas, a progress report was sought from the joint investigation team (JIT) by the high court.
The accused should be handed over to Pakistan, said letter conveyed to the British authorities.
The Federal Investigation Agency (FIA) has moved an anti-terrorism court (ATC) in Islamabad for the seizure immovable properties owned by Muttahida Qaumi Movement (MQM) founder in and outside Pakistan.
The directions for transferring the case to ATC courtroom number 1 were not issued as yet.
"I killed people one after another on a party official Nadeem's orders and the cruel man sitting in London is behind Nadeem," Abdul Salam said in the video.
MQM founder was produced before District Judge Emma Arbuthnot, Chief Magistrate at Westminster Court, where he was granted conditional bail.
Hussain was later arrested by the police after his indictment in the case and he will be produced before a magistrate for carrying out further action.
Muttahida Qaumi Movement (MQM) founder Altaf Hussain has been called again for questioning in relation to the incitement speech of August 2016 from London to a rally in Karachi.
The interrogation of the MQM founder started at 10 pm on Tuesday night and continued for two hours