Rebecca Adlington stayed away from the Aquatics Centre this morning, but close friend Jo Jackson returned to the water little more than 14 hours after booking her spot on the Great Britain Olympic team.
Adlington and Jackson qualified for the 400 metres freestyle last night, the event in which they were first and third in Beijing four years ago.
Loughborough ITC swimmer Jackson came back today for the 200m freestyle heats, but Adlington withdrew in order to concentrate on the 800m later this week.
The Nova Centurion swimmer was not targeting an individual berth, but may compete at the ASA National Championships in Sheffield in June in a bid to make the 4x200m relay team.
Jackson, the British record holder, was third fastest through to tonight's semis in two minutes 00.09 seconds.
Rebecca Turner was highly impressive, the City of Sheffield swimmer lowering her personal best by 0.16 seconds to qualify fastest in 1min 58.59secs. Caitlin McClatchey, sixth in Beijing, was second fastest, 0.25s adrift.
Eleanor Faulkner and Jazmin Carlin missed out in the 400m last night, but went through this morning.
Hannah Miley and Aimee Willmott made the GB team in the 400m individual medley and the pair led the way in the 200m event. European bronze medallist Miley touched in 2:14.19, 0.1 ahead of Willmott.
As a test event, the British Gas Swimming Championships are open to overseas swimmers, who filled the top six places in the men's 200m butterfly heats.
Fastest Briton was Joe Roebuck (1:59.19) ahead of Roberto Pavoni, both of whom have already qualified in the 400m individual medley, and British record-holder Michael Rock.
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