socci, effectively a 'default' is where you have not kept to the terms of a credit agreement. I think (from memory) these stay on your credit report for 6 years and show the amount outstanding (also good credit stays on for 6 years, i.e. where you have paid according to the terms). Once you settle the balance of the default, it's shown as 'satisfied'. From what they've said to you, it seems as though they have removed the default tag altogether (as they should have done).
I don't know about dh. Normally when you ask for a report, you have to fill in details for your other half as you're living at the same address and alot of this agency information is driven by the address (rather than the person).