Following last weekend's 1-1 draw with Arsenal in Seagrave, the young Foxes welcomed another London outfit to the Club's new training ground in north Leicestershire for their fourth-last fixture of 2020/21.
However, it turned into a difficult afternoon for City's youngsters as strikes from Oliver O'Neill, Mika Biereth and Kieron Bowie put the Cottagers into a three-goal lead at the break.
Biereth completed his hat-trick with two more efforts in the second period, meanwhile, as Bowie added a second goal to his own tally, while Luke Harris and Oliver Sanderson completed an 8-0 win for the visitors.
The result leaves City's Under-18s in 12th position in the U18 Premier League South standings with 11 points, one more than bottom side Southampton. They next welcome Aston Villa to LCFC Training Ground on Tuesday 4 May (7pm BST kick-off).
The details...
City: Odunze; Godsmark-Ford, Cook, Aisthorpe, Cover (Kutshitnza 45'); Maswanhise (Booth 61'), T. Pennant, Madivadua, Braybrooke, Ewing (c); Russ (K. Pennant 72').
Subs not used: Chibueze, Butterfill.