How does the French civil code differ from British common law?

Judges have less power and influence over laws under the French civil code than under British common law.
Judges are elected under British common law, and appointed by the head of the electorate under the French civil code.
Judges under the French civil code rely on precedent to interpret cases, unlike judges under British common law.
Judges under British common law hear only criminal cases, while judges under the French civil code hear both criminal and civil cases.