With two silvers from the Moscow leg last week, Jamieson opened his campaign in Dubai with a dominant victory in the 200m breaststroke.
He then followed that up with silver in the 100m equivalent, clocking 58.70seconds to finish second behind Australian Kenneth To.
That's now four from four for the Olympic 200m breaststroke silver medallist from London 2012 with Sophie Allen also back on the podium on day two.
Allen, who herself claimed two silvers in Moscow, placed second again in the 200m breaststroke after posting a time of 2:24.85minutes in Dubai.
She just missed out in the 200m butterfly placing fourth and was seventh in the 50m breaststroke as another busy scheduled of events was planned.
Fran Halsall's sequence of near misses continued as after a fourth in the 50m freestyle she repeated the trick over 100m on day two and was fifth in the 50m butterfly.
Georgia Davies was also fifth in the 100m backstroke final while Liam Tancock improved to sixth in the men's 50m equivalent.