Six of Great Britain's Athens-bound swimming team warmed up with wins at the ASA National Long Course Championships in Manchester.
Darren Mew followed up his first day 50m breaststroke win with victory in the 100m ahead of James Gibson.
Other male winners included Stephen Parry and David Davies.
Rebecca Cooke won titles in the 1500m freestyle and the indiviudal medley, while Katy Sexton and Karen Pickering also took golds.
Great Britain boast a strong Olympic tradition in the breaststroke and it looks set to continue with Mew and Gibson to the fore.
Mew held off the 50m world champion to win in a time of 1:01.03, with Chris Cook in third.
"It felt very smooth," he said. "It was a good race and I was pleased with my time."
Parry declared himself "on the right track" after a commanding 200m butterfly win, while Davies followed up his win in the 400m freestyle on the first day with victory in the 800m
Like Davies, Cooke won a 400m free title, which she also followed up with gold on the second day.
She took 400m individual medley title in 4:51.96, after being inside record pace for her own British mark for much of the race, and then won the 1500m freestyle.
Completely unchallenged, she ploughed a lonely furrow and finished almost a length ahead in 16:30.76.
Sexton won the 50m backstroke from Melanie Marshall and Sarah Price in 29.33secs.
And with Marshall not contesting the 100m free final, the path was left clear for Pickering to pick up her eighth title.
Britain's Olympic swimmers will continue their preparations in Manchester over the weekend before travelling to a pre-Games holding camp in Cyprus.