Defending champions England Under 20 have named their side to take on Italy in their opening game of the IRB Junior World Championship at the ECO Light Stadium in Auckland on Monday, kick off 06:35 (BST) live on Sky Sports.
Moriarty, a key figure in England's triumphant campaign last summer, starts on the flank with Gloucester team mate Billy Burns named amongst the replacements.
England last faced their Italian rivals in their final game of the U20 Six Nations, winning 52-5, but Head Coach Nick Walshe says that that result will have no bearing on this game.
"We're looking forward to kicking off this campaign, we've been in New Zealand for over a week now - the lads are acclimatised and have trained well. They've taken real ownership and can't wait to get out there.
"We did well against Italy in the Six Nations but that game has gone, we're focused on performing well in this game and kick-starting our JWC. "
Captain Callum Braley added:
"We've enjoyed our first week in Auckland but now it's time to get down to business. We're excited about the next five games - there's pressure on us, but we have to use that to our advantage and perform as well as we can."
England Under 20 starting XV against Italy
15 Aaron Morris (Bedford Blues)
14 George Catchpole (Leicester Tigers)
13 Nick Tompkins (Saracens)
12 Harry Sloan (Harlequins)
11 Nathan Earle (Saracens)
10 Sam Olver (Northampton Saints)
9 Callum Braley (Bristol Rugby, captain)
1 Danny Hobbs-Awoyemi (Northampton Saints)
2 Tom Woolstencroft (Bath Rugby)
3 Paul Hill (Leeds Carnegie)
4 Maro Itoje (Saracens)
5 Tom Ellis (Bath Rugby)
6 Ross Moriarty (Gloucester Rugby)
7 Gus Jones (London Wasps)
8 James Chisholm (Harlequins)
16 Jack Walker (Leeds Carnegie)
17 Alex Lundberg (London Wasps)
18 Biyi Alo (Saracens)
19 Charlie Ewels (Bath Rugby)
20 Joel Conlon (Exeter Cheifs)
21 Henry Taylor (Loughborough University)
22 Billy Burns (Gloucester Rugby)
23 Henry Purdy (Leicester Rugby)
Olly Morgan is heading up Gloucester's Singha Premiership 7s once again this summer and, with the start of the tournament just around the corner, he's looking for some of the club's younger players to make the most of the playing time and the exposure it offers.
The Cherry & Whites are now in their second full week of preseason ahead of the new season, and GRTV caught up with the new Head of Strength & Conditioning Dan Tobin to chat about what is in store, and his first impressions of the club.
Speaking exclusively to GRTV before Wales set off for Twickenham on Friday afternoon, Ross Moriarty chatted about the prospect of taking on England on Sunday as well as the challenge of the subsequent tour to New Zealand.
Brighton is the venue of choice for England this week as the squad have reported for a training camp to prepare for the upcoming international against Wales. GRTV caught up with Gloucester's Matt Kvesic after the first day's training.
Speaking to GRTV after the game, Gloucester Rugby number eight Ben Morgan reflected on the loss to Northampton Saints, and spoke about what he and the team need to do for the new season when the team return after the summer break.
In only his second Aviva Premiership outing, Lloyd Evans scored his first senior try for Gloucester against Northampton Saints on Saturday and told GRTV afterwards that he enjoyed the experience despite finishing on the losing side.
Back row forward Dan Thomas has tasted success in the Premiership Rugby 7s in the past, and explained this week that he and his team mates will make the most of the chance to shine when they kick off their 2016 campaign next week.