His Tigers colleague Greig Tonks retains his place at full-back after a 15-6 win over hosts Scotland on Easter Sunday, while Jack Cobden has been named among the replacements.
Collett's inclusion is one of seven changes made by England coach Chris Kibble who said: "This is going to be a very big game for both sides. We are expecting Wales to present us with a very tough challenge while they will probably be looking to get their own back on us after the Home Unions final a year ago. They have more experience than Scotland and will be more street-wise so this game will be a step-up for our players."
England U-18s Six Nations Festival team
1 Ben Moon (Ivybridge Community College & SWERA)
2 Tom Collett (Wyggeston QEI College & Leicester Tigers)
3 James Currie (Millfield & Bath Rugby)
4 Graham Kitchener (Adams Grammar & Worcester Warriors)
5 Dan Williams (Ivybridge Community College & SWERA)
6 Calum Clark (Barnard Castle & Leeds Tykes)
7 Jacob Rowan (Bradford Grammar & Leeds Tykes)
8 Carl Fearns (Sedbergh & Sale) (captain)
9 David Lewis (Ivybridge Community College & SWERA)
10 Rob Miller (Keswick School & Newcastle Falcons)
11 Charlie Sharples (St Peters High School & Gloucester)
12 Mike Stanley (Oaklands College & Saracens)
13 Ben Williams (Bryanston School & Bath Rugby)
14 Sebastian Stegmann (Cranleigh School & NEC Harlequins)
15 Greig Tonks (Nottingham High & Leicester Tigers)
Replacements
16 Joseph Marler (Sussex Downs & NEC Harlequins)
17 James Clark (London Irish)
18 Alex Brown (Dulwich College & Saracens)
19 Courtney Lawes (Moulton College & Northampton Saints)
20 Oliver Frost (Bromsgrove School & Worcester)
21 Jack Cobden (Wyggeston QEI College & Leicester Tigers)
22 Tom Sargeant (Royal Grammar Guildford & NEC Harlequins)
23 Luke Eves (Colston's Collegiate & Bristol Rugby)
24 Mike Macfarlane (Royal Grammar Guildford & NEC Harlequins)
25 Mark Davies (St Peters High & Gloucester Rugby)
26 Henry Trinder (Hartpury College & Gloucester Rugby)
