If the loans are in his name then he is responsible for them, not you. The only debts that you are responsible for are those in your name only. If there are any in joint names the credit company will go after both parties. Hope this helps!
the other thing you can do so as to thoroughly prevent any comeback on you is to apply for a clean break order. This means that any reference to him will not affect you in any way. It also means if you win the lottery next week he cannot claim any of it! Without a clean break order ex-spouses are still entitled to claim half on any winnings etc., plus entitlements on pensions etc.