It would be good if ITV aired the original documentary that they made after the trial, Major Fraud it was called.
“Quiz” was very sympathetic towards the Ingrams - I wasn't at all surprised to find out that they actually met with the producers while it was being filmed!! So it sounds to me like they had some sort of influence with the way it was made, ending in the question of whether they were guilty or not.
Of course they were bloody guilty, watch the factual documentary and it will leave you in no doubt! Rather than a fictional drama that was influenced by the Ingrams