Jason Kenny won his record-equalling sixth Olympic Games gold medal while fiancée Laura Trott again became the most successful female British Olympian on a memorable final night in the Rio velodrome.
Kenny took his third gold of the Games in the final event, matching the gold medal haul of Sir Chris Hoy and mirroring the Scot's triple-gold feat of Beijing 2008.
Trott watched on tearfully from the track centre having earlier picked up her fourth individual gold with an unbeatable performance in the omnium, which she won by 24 points.
Becky James and Katy Marchant also took their place on the podium, winning silver and bronze respectively in the individual sprint to take GB's medal tally on the track to 11 from nine events.
It is the second consecutive Games in which Kenny and Trott have come away with multiple gold medals, with Trott backing up her team pursuit and omnium title.
"What I did at London 2012 was incredible and I was so so proud. So to come back and to it again is unbelievable," Trott said.
“To see people that I idolise like Sir Chris and my fiancé Jason back it up in London made me think ‘how on earth do these people do this?’ going from such highs to the lows of the World Championships to destroy everybody once again. So for me to come here and do the same, honestly I’m just so proud."
Kenny won both the team sprint and individual sprint in London, and as well as retaining those titles he kept the keirin crown in British hands for the third straight Olympiad, taking over from Hoy.
“I was there in Beijing when Chris rocketed to startdom. He was already an Olympic champion, but when he won those three medals, to me it was really special. To be doing the same thing eight years later is an incredible feeling," Kenny said.
Trott’s domination of the women’s Olympic Games meant the gold medal rarely looked in doubt as she destroyed the field over the course of the six events.
She finished first or second in each of the first five races and then expertly marked her nearest rivals, Sarah Hammer (USA) and Jolien D'Hoore (Belgium), in the final points race to secure the win.
“For the points race I felt really nervous. I thought they would attack me like you wouldn’t believe. I’ve done so much work for that race with Paul Manning and it’s really paid off," Trott explained.
Kenny's route to victory in the final was slightly more tense, with the race restarted twice due to riders overtaking the derny bike too early. Commissaires decided not to penalise any riders, with Kenny possibly in danger of disqualification after the first stoppage.
Finally, when the race got underway for real, Kenny bided his time to hit the front on the last lap and hold off Mattijs Buchli (Netherlands) and Azizulhansi Awang (Malaysia) to the line.
“I wasn’t thinking about being disqualified," Kenny admitted. "I knew it was really tight and usually when they shoot the gun it means that someone’s been disqualified.
"It was really tight between me and Awang, and [Germany's Joachim] Eilers wasn’t far behind either.
"Ultimately it was the right decision. It was ridiculously tight and that rule is a bit vague. I think the race broadly played out very similarly all three times. I’m happy everyone got to the start line and we put a good race on."
But the night wasn't all about Kenny and Trott, with James and Marchant taking silver and bronze in the sprint, ensuring that every member of the team who took to the track came away with a medal.
James reached the final by beating Elis Ligtlee (Netherlands), the rider who beat her in the keirin final, by two races to nil, but lost out to Kristina Vogel (Germany) in the final.
Vogel had previously beaten Marchant in the semi-final, but the Brit bounced back to win over Ligtlee in the battle for bronze.
“I’m over the mood. I was aiming for that gold so it is a little bit disappointing but if someone had said to me a couple of weeks ago that I’d be coming away with two silver medals I would have taken it. I’m absolutely thrilled," James said.
“I have come here in the form of my life. Two silvers and an Olympic record will be something that sticks in the memory."
Marchant, a former heptathlete who only joined the British Cycling elite programme late in 2013, admits she couldn't have imagined winning an Olympic medal so soon after making the switch.
"It was a massive thing for me to get selected and I really had to prove myself in training and competitions we were doing locally to get the coaches on my side. To tonight be walking away with a bronze medal, I just cannot believe it," she said.
“I could not have done this journey without Becky and I absolutely love her to bits. She’s an incredible athlete and to be able to walk alongside her and get on the podium with her is an incredible feeling."