Viv Solomon scored the only goal of the game for Blues mid-way through the first half.
Despite Forest piling on the pressure in the later stages, Blues defended in numbers and stood firm for the remainder of the match.
“Forest were joint top in the league before the game and whenever you go over there you know it will be a hard game,” ” said Academy coach Steve Spooner.
“But we were in generally control of the game as much as you can be at 1-0, because it only takes a slight mistake from someone and the whole complexity of it changes
“The thing that was particularly pleasing was that we defended very well as a team. The back four looked more solid than they have done for a while and that was reflected in the fact we kept a clean sheet.
“There was great work ethic from everyone, the subs’ included, and every player had a good game. We know they can pass and play but it’s the other side of the game that has sometimes been brought into question.
“There were periods in the game where we had to get people working hard and defending from the front and we did that and we need to carry that into the next match.”
Blues U18s: Callum Preston, Josh Cogley, Dominic Bernard, Foday Nabay, James Fry, Nat Kelly, Viv Solomon (George McGhee, 81), Liam Truslove, Fisayo Adarabioyo, Koby Arthur (Kwadwo Asamoah, 60), George O’Neil.