Query: How did Briggs characterize the relationship between France and Edwards?
Context: The police officer had already pleaded guilty to misconduct in a public office and given a two-year gaol sentence in 2014, but the jury in France’s trial was not informed of this. Following the passing of the guilty verdict, the officer leading Operation Elveden, Detective Chief Superintendent Gordon Briggs said France and Edwards had been in a "long-term, corrupt relationship".