Read "Warburton's War" by Tony Spooner and you will see that he was completely different in character to Gibson and Bader. He always obtained his photographs, but was totally unconventional both in his dress and military manners. Openly living with his girlfriend on Malta (while he was already married to a girl back in England), he had been originally sent to Malta by a sympathetic flight commander in order to save him from disciplinary action involving mismanagement of money.
He was perhaps very useful in theatre, but would have been an embarassment back in Blighty had the full story of his way of life come out - which it certainly would had he been awarded the VC. Described by Teddar as the most valuable pilot in the Mediterranean theatre, he is a complex conundrum for us to assess. Perhaps it was best that he was not awarded his no doubt deserved VC - the publicity would have destroyed his way of life on Malta. It was Malta that brought out the best in him, and his decline once the war moved on is most marked.