Thanks Susanne. My partner is a bit concerned Little Man might be too passive if done that early, but I've reassured him it's mostly due to temperament.
He actually snook out the cat flap the other day and went nose to nose with the next door neighbours MASSIVE black and white tom.....he didn't turn on his heels and run, just looked at him a bit unsure and then backed away slowly. It was almost comical! (He wasn't in any danger, Smudge is a softie.)