Steve Palmer, from the NCA, said: “Although the victim will always live with what Fish did, I hope his conviction will bring him some peace of mind and allow him to move on.”

The court heard that Fish, who was 20 at the time, began looking after the girl when she was 15 and in care.

He would ply her with drink and drugs before sexually abusing her and making indecent images and videos of her, which were later found on his computer, despite him denying their existence.

The victim said Fish would become violent, on one occasion smashing a mug over her head and leaving her needing stitches.

Crown Prosecution Service specialist prosecutor Jeanette Smith said the “cruel” abuse the victim received “can cause lifelong physical and emotional trauma”.

“Fish used gifts, drugs and alcohol to groom, coerce and manipulate a child into a relationship with him, all for his own sexual gratification,” she said.

“The manner in which he used threats and violence to then control the victim and enforce his demands for sex was completely despicable.”