Assets can be stripped form directors if they have profited from crime.

. Cars. Houses. Investments.
Not if they're in India. You can't go after the father or the brother as they resigned before this went criminal and have most likely not profited. Mubasher has probably fled or is in the process of fleeing. Legal proceedings will take MONTHS. If you want to have any hope of getting anything back, Mubasher needs to be arrested and the company assets frozen.
Apart from family, what ties him to the community? He probably has no money investmented in the company, no assets or property in the UK. EVERYTHING is being done in India. He is a 23 year old kid, living with his parents, working for his dad, that has just had millions of pounds dropped in his lap. Do you really think he's going to hang around and wait while you attempt to strip any assets?
This is not a 60 year old grandfather with a wife, grown up kids, a house and a 30 year membership to the local golf club. This is a kid with family ties to India who will probably disappear back there at the first sign of trouble. Believe me, I've seen it happen.
This is WAAAAY beyond internet forum jousting. This needs professionals and the police. You can go after Mubasher's assets when he's sitting in a prison cell but if he's allowed to flee you will end up with nothing but legal bills.