As I understand it one of the directors (not the father) is a practicing accountant, for which he has spent many years studying. If they were to do anything unlawful on exit then he would not be able to a) be a company director for a number of years, or b) lawfully practice as an accountant ever again.
There is currently only one appointed director: AKRAM, MOHAMMED MUBASHER (MR) - is that who you mean?
Freezing bank accounts is hardly an option, not least because the company has had ample time to move any money out of company accounts. Legal action, bailiffs and otherwise can only take what the company has.
I stand corrected. I thought the resignation as director was his father, not his brother. Indeed there is only one appointment.