Team GB swimmers doubled their Rio 2016 medal tally on a historic night in the pool as Siobhan-Marie O’Connor and the men’s 4x200m freestyle relay quartet both won silvers.
The Brits' medal tally of four is the most they have won at a Games since they claimed one silver and four bronzes at the 1984 Olympics in Los Angeles.
It was also a groundbreaking evening for O’Connor, who became the first British woman to reach the Olympic podium for the 200m individual medley.
The 20-year old had already clinched European and World Championship medals in her short career, as well as winning Commonwealth gold in 2014.
And she added to her set of international prizes with the most valuable of them to date, lowering her British record from the semi-finals to touch in 2:06.88 minutes, just 0.30 seconds behind Hungary’s world champion and world record holder Katinka Hosszu.
“It is an absolutely amazing feeling,” said the Bath swimmer. “I have had probably the most consistent block of work that I have ever had leading up to this.
“I was really confident coming into it because sometimes I can have disruptions. I felt in a really good place. My team have just been amazing at keeping me fit and health and in training. It is brilliant and I am over the moon with that result.
“I was pretty nervous in the call room. I just knew I had to try and stick to how I swim the race best. In the past sometimes I have gone out too hard and tried to really sit with Katinka and I haven’t had a finish.
“I just had to swim it how I know best and when I turned on the breaststroke I was surprised I was quite close. When I looked around and saw the time I was over the moon because I didn’t think I had that time in me and I am really pleased to have pushed her as hard as I could.”
The men’s 4x200m freestyle relay quartet were also one of Team GB’s big medal hopes in Rio, coming into the competition as world champions from 2015.
And while there was no keeping with the American team on the night as they won in 7:00.66, the British quartet of Stephen Milne, Duncan Scott, Dan Wallace and James Guy held off Japan to touch in 7:03.13.
Guy stood out with a cathartic anchor leg for the British team, having openly admitted he had been below his best after falling short of the medals in the individual 200m and 400m freestyle.
The 20-year old clocked the fastest split of the team on 1:44.85 but all four swimmers played their part as they ducked more than a second under the British record 7:04.33 set to win the world title 12 months ago.
"Every time I've raced this week I've got faster and faster and that just shows if you put your mind to something then anything can happen," said Guy.
"For me, tonight it's about racing for my country and doing my country proud.
"I've come away with a silver medal and if four years ago someone said to me 'you're going to get a silver medal at an Olympic Games, a fourth and sixth and you're going to swim ok' I would have taken that."
Scott had earlier been in action in the 100m freestyle semi-finals, backing up his British record from the heats to book a spot in his first individual Olympic final.
The 19-year-old from Stirling clocked 48.20 to touch fourth in his heat and progress seventh fastest overall.
Andrew Willis will also return for the finals on day five after winning his semi-final in a personal best 2:07.73 to progress second fastest in the 200m breaststroke.