Nathan Robertson and Jenny Wallwork overcame Ben Stawski and Lauren Smith to win an all-English mixed-doubles final at the Polish Open International in Wroclaw.
Olympic hopefuls Robertson and Wallwork comfortably secured a 21-15 21-11 win.
The pair add the Polish title to their triumph at the Swedish International in Stockholm in January.
English duo Mariana Agathangelou and Heather Olver also claimed glory in the women's doubles.
The pair, who also won in Sweden in January, overcame Americans Eva Lee and Paula Lynn Obanana 21-12 23-21.
For both pairings, the victories give them what could be crucial ranking points in the race for selection for Team GB at London 2012.
Robertson and Wallwork are chasing fellow British pair Chris Adcock and Imogen Bankier for a place in London.
The highest pairings in both the doubles and mixed doubles world rankings on 3 May are most likely to represent Great Britain at the Olympics.