Narraway told the Gloucester Citizen this week that he was slightly taken aback when Stuart Lancaster gave him the nod with regard to the captaincy.
"We all got down and touched base for one-on-ones when we met up, I had a little chat with Stuart and he finished with 'and oh yeah, I want you to captain the side'.
"Non-cap or cap, it's obviously a great honour to captain your country, it's something that every boy dreams of so I obviously grabbed it with both hands, said thank you and got stuck into training.
"Before this year I'd flirted with the captaincy a couple of times with Gloucester, when people were away, but I had never got a string of games.
"This year with the absence of Mike, I've had to step up, so rather than supporting Mike I've had to step up and be supported.
"With that comes responsibilities with the way I play and the way that I have to lead in my actions. So it's obviously been a lot to think about.
"It's all about responsibility, Brushy gave it to me at Gloucester and Stuart's given it to me here.
"So I've got to make sure I'm saying the right things and doing the right things, to make sure that I can lead those who are around me."
Although he will have the armband on Sunday, the Worcester born player knows that he can rely on the other senior players within the squad to back him up.
"I think myself and the other leaders out there, we've been in dressing rooms all over with club and country, it's nothing new, so we've just got to make sure we lead these youngsters out, reel them back in when they need to be reeled back in, and let them play when it's on to play.
"It's probably a little bit harder to ramp it up in this situation because you're a team that's come together for a week.
"So you're more focused on getting your shape right, getting the detail right, focusing on defence and attack, because those are the things that can break down in a side that has only been together for a week.
"It's about making sure that everyone's on the same hymn sheet.
"So I don't think there'll be too much head-butting walls and things, it will be just making sure that we're very clinical, that our accuracy's up there and that everyone's doing what everyone else is thinking."
And, of course, there is the small matter of perhaps reining in the enthusiasm of some of the youngsters in the side.
"Yes we want to play, and we want to attack, we won't come out onto the Twickenham pitch to put high balls up and kick the corners.
"We want to play and I think that suits us, but at the same time, if we've defended for 15 minutes but then turn the ball over and run when it's not on to run, then that's when we have to find that balance.
"The young guys - especially Trinds because I know him so well - he's going to want to run it, and there might have to be a few choice words out there.
"But that's the challenge of captaining and being a leader of a side. You've got to make sure that that balance is right."