..and what are you suing them for? To occupy a house which has never been yours, for which you've never paid a bean apart from expected maintenance. You've had it very cushy for the last 15 years - life's not like that for most people. Get real, stop playing that you understand the court processes and terminology, and crack on with providing your OWN home for you and your children. Don't faff around any longer pursuing unachievable dreams. As has been said before, you can throw as much money as you like at solicitors and barristers - it'll be a complete waste of money.
..and by the way, if you haven't put money in your own bank account, but it's your ex-husband's from his work - isn't he going to want that back, if he put it in the account?