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)
Jonny May's superb late score capped a thrilling 40-32 European play-off win over Connacht on Sunday. The winger spoke afterwards of his team's character and spirit as he looked ahead to one more week of rugby.
Speaking to GRTV this afternoon, Director of Rugby David Humphreys hailed the 'never say die' attitude of the team, after despite not being at their best, fighting back to take a 40-32 win after extra time over Connacht.
Jonny May continues on the wing on Sunday as Connacht come to town, and the England wing explains to the local media this week that he is delighted with his form and is looking forward to taking on Pat Lam's men.
Speaking to the local media this week, front rower John Afoa is familiar with the challenge of Connacht from his time in Belfast, and the World Cup winner is fully aware of the challenge they pose ahead of Sunday's meeting in the Champions Cup play off
Speaking ahead of Gloucester's European Rugby Champions play-off against Connacht on Sunday (Kingsholm, 3:30pm), Director of Rugby David Humphreys admitted that he's glad to have more players available than in recent weeks ahead of a tough fixture.
Nick Wood captained the Cherry and Whites on Saturday afternoon, and the experienced front rower expressed his pride in the young squad in defeat to Bath on the final day of the Aviva Premiership season.
Lewis Ludlow scored Gloucester's opening try in the 30-50 defeat at Bath on Saturday, part of an impressive performance by the young back row forward. Speaking after the game, he paid tribute to the young Gloucester side who went toe to toe with the Aviva Premiership semi-finalists.
Speaking to the local media after the game, Director of Rugby David Humphreys gave an honest assessment of the game, and expressed his pride in the way his young charges had performed against the title-chasing hosts.
Speaking to the local media this week, Gloucester Rugby scrum half Callum Braley is excited by the challenge of the West Country Derby, and the ex-Bristol man reveals the squad will be giving their all.
It was a thriller at Kingsholm on Sunday afternoon, as Gloucester snatched victory from the jaws of defeat, leveling the scores in the final minute before triumphing in extra time over a spirited Connacht side.
Having defeated Connacht Rugby in dramatic fashion in the first play-off for the final spot in the 2015-16 European Rugby Champions Cup, Gloucester Rugby can confirm ticketing details for next Sunday's game against Bordeaux-Begles at Sixways.
Gloucester snatched victory from the jaws of defeat and move on to next weekend's European Champions Cup final play-off against Bordeaux-Begles after a dramatic extra time win over a valiant Connacht side.