In front of the country's Vice President, who watched the game after opening the new pitch at the Mendoza club, an England U18s side which included London Wasps' Sam Jones (Aylesbury Grammar School), Christian Wade (RGS High Wycombe) and Jack Wallace (RGS High Wycombe), ran in a massive 17 tries over their hosts. The game included a hat-trick of scores for London Irish wing Marcus Watson as well as braces of tries for Jacob Rowan, Sam Edgerley and Wasps' Christian Wade. Wade's Wasps club mate, Jack Wallace also went over for five points which, combined with a further seven tries and 11 conversions from Leeds fly-half, George Ford, left the side with a hefty total.
England now face one further warm-up game, against Uruguay on Wednesday, before taking on Argentina in an international test match on August 3rd.
England Under 18s Coach John Fletcher said: "I'm delighted with the team's performance. We went into the game wanting to put the opposition under pressure when they had the ball and also when we did. We did that and our attack was very good, with all players showing a high level of understanding and skill.
"We scored some outstanding tries, and the most pleasing aspect of the performance was that the team stayed precise in their decision making and were ruthless in their approach and defence. England Coach Mike Ford was watching and we would like to thank him for his time in assisting with some coaching last week."
England kicked-off the game setting the high standard early on when a powerful scrum saw the back-row players take on England's attack before fly-half Ford recycled the ball out-wide to Watson for the first of his three tries. Ford added the conversion.
Mendoza drew a penalty back in the first eight minutes, but England pressed ahead with a 12-3 lead when a good line-out and drive saw Bath's James Currie muscle his way over the line.
With 10 minutes on the clock, England galloped to a 19-3 lead when another good line-out saw Ford execute a good wide pass to Edgerley who then fed inside to Newcastle full-back Tom Catterick for a converted try.
Saracens hooker Jamie George, Leeds' Rowan and Leicester's Andy Forsyth also touched down for three good tries, before Watson rounded off the first-half with his hat-trick thanks to some more good ground work by the forwards, which were then finished off well by the backs. England led 52-3 at the break.
After the restart Mendoza could not bounce back and the tourist continued to run riot. Deep inside their own 22, England turned over the ball at a ruck and with Owen Farrell and Catterick in the thick of the action Edgerley sprinted to out-run Mendoza's defence and score in the corner.
Sale lock Tom Holmes claimed his first try of the game after a great break by Wasps' Christian Wade, who then went on to claim his own score following some help from Sam Harrison and Joe Barker. Ford converted to stretch England's lead to 69-3.
The one way traffic continued with Rowan claiming his second touchdown and Wasps' Jack Wallace joining the score sheet with his first try.
Bristol's Mako Vunipola, Edgerley, Harrison and Wade also added tries and with Ford adding a further three conversions England sealed a very convincing 107-3 victory on Argentinean soil.
Replacements: 16 David Blackwell (Gloucester Rugby & Hartpury), 17 Mako Vunipola (Bristol Rugby & Millfield), 18 Jamie Gibson (London Irish & Marlborough College), 19 Joe Barker (Leeds Carnegie & QEGSWakefield), 20 Sam Harrison (Leicester Tigers & John Cleveland College), 21 Rory Clegg (Newcastle Falcons & Barnard Castle), 22 Christian Wade (London Wasps & RGS High Wycombe), 23 Joe Cobden (Leicester Tigers & King Edward VI Lichfield), 24 Jack Wallace (London Wasps & RGS High Wycombe).
Tries: Vunipola, Watson (3), Currie, Catterick, George, Rowan (2), Forsyth, Edgerley (2), Holmes, Wade (2), Wallace, Harrison
Conversions: Ford 11
Substitutions: Blackwell for George, Vunipola for Currie, Barker for Gray, Wade for Watson (all HT), Wallace for Forsyth, Clegg for Farrell, Harrison for Pasqualin (all 43 mins), Cobden for Catterick (52 mins)
England Under 18s Argentinean Tour Itinerary
England v Tucuaman Under 18s, July 19th, Los Tos Tarcos, kick-off 8pm BST WON 40-24
England v Buenos Aires Under 18s, July 23rd, 11pm BST WON 39-19
England v Mendoza Under 18s, July 27th, WON 107 ' 3
England v Uruguay, July 30th, Hindu Club, KO 3pm
England v Argentina, August 3rd, KO TBC