If the debts are in your name, then you are legally responsible for them.
You may be able to recover part of that money from your partner although it would depend on what the money had been spent on whether it had been spent on you or on the “relationship”.
You say that you have three children but you don’t say whether they are his children.
If they are, he is obviously liable to pay child maintenance at the CMS rates until they reach 18 or leave full-time nonadvanced education.
The CMS rates: which are here
Do read the whole document but the basic rates start at the top of page 18.
Child maintenance is reduced by 1/7th for each 52 nights that the non-resident parent has the children.
If the children are not his, then it’s unlikely that he has any liability unless he has adopted them or treated them as his own and the natural father doesn’t pay anything.
Can I clarify anything else for you?
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