Champion English horse Roaring Lion has returned to New Zealand's Cambridge Stud to continue his recovery from two colic surgeries.

Roaring Lion, a four-time Group One winner and champion three-year-old of 2018, was sent to New Zealand to serve the southern hemisphere breeding season but developed colic immediately after leaving quarantine.

He had been at the Cambridge Equine Hospital since July 27 and was released on Thursday.

"Thanks to two world-class surgeons, Dr Alanna Zantingh and Dr Greg Quinn from Waikato Equine and with our own vet Dr Rob Hitchcock assisting, we have managed to save his life and he is on his way to a slow recovery," Cambridge Stud chief executive Henry Plumptre said.

"It has been a complex and challenging environment for everyone involved and we owe a massive debt of gratitude to the veterinary team and the Cambridge Stud staff, led by Marcus Corban, who have ensured his survival.

"While he has a long road to travel, the beginnings of a recovery are complete and having him back at Cambridge signals the start of the next stage.

"We have found this week what Sheikh Fahad and David Redvers experienced with Roaring Lion last year on the racecourse - extraordinary courage, a will to win and an amazing constitution.

"His demeanour remained calm at all times which was a major part of his immediate recovery. Our aim now is to slowly repair him back to full health, in order that he can return to the UK and continue his career."