The championships were a qualification event for the relay races at the 2016 Summer Olympics .
Great Britain qualified for five of the six relays in Rio , the women 's 4 x 100 freestyle being the exception , where they did not field a team in Kazan .
The championships were a qualification event for the relay races at the 2016 Summer Olympics , and Great Britain qualified for five of the six relays in Rio , the women 's 4 x 100 freestyle being the exception , where they did not field a team in Kazan .