The Dutch quartet of Ranomi Kromowidjojo, Femke Heemskerk, Tamara van Vliet and Valerie van Roon clocked a winning time of 1 min 33.91sec in the final at the Royal Arena in the Danish capital.

It bettered the 1:34.24 which the country set at the 2014 World Championships in Doha in Qatar.

Joining Kromowidjojo and Heemskerk on the team from four years ago were Inge Dekker and Maud van der Meer.

Sweden's Michelle Coleman, Sarah Sjöström, Louise Hansson and Natalie Lindborg finished second today in 1:35.92, while Denmark's Emilie Beckmann, Mie Nielsen, Julie Kepp Jensen and Pernille Blume came third in 1:36.02.

Kromowidjojo had earlier set a Championship record on her way to winning the women’s 100m freestyle final.

Her time of 50.95 bettered the previous mark of 51.35 posted by compatriot Dekker in 2009. 

Sjöström claimed the silver medal in 51.03, while Blume finished third in 51.63.

A world junior record was also lowered today as Russia’s Kliment Kolesnikov broke that in the men’s 100m backstroke for the second time in as many days. 

The 17-year-old finished the final in 48.99 to claim the gold medal. 

It bettered the 49.25 he set in the semi-finals yesterday. 

Italy’s Simone Sabbioni finished second in 49.68, while Germany’s Robert Andrei Glinta came third in 49.99.

Another Russian in impressive form today was Vladimir Morozov, who twice lowered the men’s 50m freestyle Championship record en route to victory.

Morozov posted a time of 20.45 in the semi-finals to better the previous record of 20.48, which was set by France’s Amaury Leveaux in 2008.

He then lowered it again in the final with a time of 20.31.

Great Britain’s Benjamin Proud finished second in 20.66, while Italy’s Luca Dotto came third in 20.78.

Hungary’s Katinka Hosszú was also a stand-out performer today and won the first of her two gold medals with success in the women’s 200m backstroke final.

The triple Rio 2016 Olympic gold medallist’s time of 2:01.59 saw her finish ahead of Ukraine’s Daryna Zevina, second in 2:02.27, and Italy’s Margherita Panziera, third in 2:02.43.

Hosszú’s second victory came in the women’s 100m individual medley final with a time of 56.97.

Sjöström finished second in 57.92, while Norway’s Susann Bjoernson came third in 59.26.

Philip Heintz was one of two winners for Germany today after coming out on top in the men’s 200m individual medley final with a time of 1:52.41.

Greece’s Andreas Vazaios was the silver medallist in 1:53.27, while the bronze went to Norway’s Tomoe Zenimoto Hvas in 1:54.16.

Also securing a gold medal for Germany was Franziska Hentke, who won the women’s 200m butterfly final in 2:03.92.

Italy’s Ilaria Bianchi was a close second in 2:04.22, while France’s Lara Grangeon touched home in 2:04.31 for the bronze medal.

In the men’s 1,500m freestyle final, Ukraine’s Mykhaylo Romanchuk came out on top with a time of 14:14.59.

Italy’s Gregorio Paltrinieri took the silver medal in 14:22.93, while Norway’s Henrik Christiansen claimed the bronze in 14:25.66.