The police, upon the expiry of bail, will decide either to indict Hussain or to grant him extension in bail.
The MQM chief was arrested in June, 2014, on charges of money laundering. However, after nearly nine hours of investigations, he was released on bail.
Since then, Altaf Hussain has thrice been given extension in bail.
Along with Hussain, Tariq Mir and Muhammad are also scheduled to appear before London police on October 6 and 7 respectively.