What is a 1st and 2nd legal charge?

In a mortgage by legal charge, the borrower remains the legal owner of the property, but the creditor gains sufficient rights over it to enable them to enforce their security (e.g. to take possession of the property or sell it). The debtor in this instance can be first in line or second in line; for the second charge, the creditor will need consent from the first creditor to place a charge on the title.