Not at all. This person came from a non Sayyid family in Basra in Iraq. His father's name is Ismael Gaati' إسماعيل گاطع. Niether Ahmed nor his family have anything to do with Imam Al-Mahdi (AS).
Wassalam.
Sayyed Mohammad al-Musawi is originally from Iraq and heads up the World Ahlul Bayt Islamic League in London. Other than being involved in various humanitarian projects, he frequently responds to religious questions. In the past, he has also spent significant time in India guiding the community.