Swansea City wing back Connor Roberts struck the only goal of the game, and his side held on to protect their league-leading defensive record. No side have conceded fewer goals than the Swans, who move into the play-off spots.
Story of the game:
A bright start from Forest almost delivered the first goal within five minutes. Excellent work from Sammy Ameobi on the left flank resulted in an inviting cross, which Lyle Taylor flicked just wide of the far post.
On 11 minutes, Taylor shifted the ball into a shooting position on the edge of the box, but Swansea defender Ryan Bennett was able to deny his effort with a strong block. Bennett then had Swansea's first chance of note, heading tamely at Brice Samba from a free kick.
Swansea started to grow into the game on the half hour mark, with Andre Ayew turning neatly on the edge of the area. His shot was powerful, but deflected just wide.
Forest winger Anthony Knockaert spurned a glorious opportunity to put his side ahead, shortly before half time. Cutting in superbly from the right wing, he shot straight at the goalkeeper when it seemed easier to score.
Forest then found themselves ruing the chance, as they fell behind. Good work from Ayew saw his cross deflected to an onrushing Connor Roberts, who buried a header into the far corner.
The second half began at a fast tempo, with Ayew's acrobatic volley flying just wide of the far post, with the goalkeeper stranded.
Forest pushed hard for an equaliser, with Taylor receiving the majority of their chances as the half wore on. On 62 minutes, he fired over when Ameobi was well placed alongside, and then set up Knockaert to fire wide from the edge of the box.
Swansea wasted chances to end the game as a contest late on, with Roberts, Guehi and Grimes all shooting wide when well placed. Forest's final chance fell to their talisman Taylor, but he could only head wide after being picked out from the wing.
Man of the match: Connor Roberts
The Welsh wing back had a game to remember, scoring the winning goal and providing numerous threatening crosses from the flanks. He also coped with the threat of Forest's wingers superbly, tracking back to make a number of important interventions.
Forest promising, but not clinical
This game proved another frustrating loss for Chris Hughton's side. On numerous occasions, Forest created openings and promising moments, but their finishing was wayward. Taylor was often isolated up front, with midfielders not providing enough support when the ball was played long.
Swansea are an exceptional defensive unit
Steve Cooper's side proved why pundits must take them seriously this season. Their back three coped with everything Forest could muster, with Bennett in particular outstanding throughout. Their transitional play allows Bidwell and Roberts freedom to contribute higher up the field, with the latter proving the difference on the day.