The men's 4x100 metres team insisted the problems of the past were over and set their sights on Olympic glory after storming to the European title on a night of double relay gold for Great Britain in Amsterdam.
The sprint quartet continued their resurgence ahead of Rio by taking victory on the final night of competition at the Dutch capital's Olympic Stadium before the women's 4x400m relay team followed in dominant fashion.
There were silver medals too for the women's 4x100m relay squad and Robbie Grabarz in the high jump, while Elliot Giles in the 800m, Chris Baker in the high jump and the men's 4x400m relay team all claimed bronze.
It meant a British team, missing star names like Mo Farah and Jessica Ennis-Hill, finished the championships with 16 medals, including five golds.
For the men's sprint relay team there was reassuringly no sign of the baton blunders which have plagued them over recent seasons as a strong line-up of James Dasaolu - who before this championships had not been part of the relay team for two years - Adam Gemili, James Ellington and Chijindu Ujah took victory in 38.17 seconds.
The changeovers were safe rather than slick, the time marginally slower than the same four ran in Saturday's heat, but Ujah on the final leg still had enough of a lead to hold off fast-finishing Frenchman Jimmy Vicaut by 0.21secs.
Britain's men were defending champions in the Netherlands, but going into the event their recent relay record made for sorry reading.
They had been disqualified from the last four global championships, including London 2012, and most recently at last year's World Championships in Beijing after which team members turned on each other.
They were after a clean run in Amsterdam to ensure they head to the Olympics in the best possible form to take on Jamaica and the United States - and they got it.
Ujah bore the brunt of his team-mates' criticism in Beijing, but the tensions which spilled over on that occasion now appear to have been settled.
"Everyone's cool," Ellington said. "The team's really gelled together this year. I'm a big believer that everything happens for a reason.
"Last year could have either broken us or made us and I think it's made us.
"Sometimes you need things to happen for you to gel together, I think this year it's showing in our running. We're consistent, we're getting it round, we've got an Olympics to come up and I think we'll be ready."
Gemili, who withdrew from the individual 100m to focus on the relay, said: "We have to believe - and we do - that if we get it right we can beat anyone. We work so hard as a team.
"We're in it to win it. We don't want to be making up the numbers, we want to be challenging to be the best."
The women's sprint relay team had to be content with silver behind a Dutch team led by poster girl Dafne Schippers following a couple of rusty changeovers.
The quartet of Asha Philip, Dina Asher-Smith, Bianca Williams and Daryll Neita came home in 42.45s, 0.41 behind the hosts who stormed to a national record.
"There is definitely more in the tank - we want to be running our fastest times in August at the Olympics," said European 200m champion Asher-Smith.
Ireland claimed their first medal of the championships as a strong finish from Ciara Mageean earned her bronze in a pedestrian 1500m final.
Looking strong in the home straight, Mageean almost chased down home favourite Sifan Hassan, coming home in 4:33.78 to miss out on silver by just 0.02; Britain's Sarah McDonald was ninth.
There were two more British medals in the high jump as Robbie Grabarz took silver ahead of Chris Baker on count-back after both cleared 2.29m. Italy's Gianmarco Tamberi won gold with 2.32m.