Jenna Randall and Olivia Federici quickly set their sights on Rio in 2016 after they came ninth in the synchronised swimming duet free final as Russia claimed their fourth successive title.
Randall and Federici were the first British pair to have competed in an Olympic synchro final since 1992 when Kerry Shacklock and Laila Vakil finished sixth.
Their technical and free routines saw them qualify in ninth and on Tuesday they returned to perform the latter, a London-themed routine portraying the ravens at the Tower of London set to a Chemical Brothers soundtrack.
The pair had identified a number of areas in which improvements could be made and they increased their score by 0.380 points to 89.170pts. When added to their technical mark on Sunday, their overall total was 177.270pts.
Federici was satisfied, saying: "I think so. There are always things we can fix for our next competition, things we want to improve on and take a step up but it felt like a good swim and we definitely enjoyed the final."
Given it is a sport that is judged and where contestants are always finding things to improve, it is hard to see how true satisfaction can be reached.
Federici said: "You can be happy if you give everything and it is your best performance to date - for what you can do at that level if you can achieve the best performance at that level that is all you can do. But you are always going to want to keep on improving, you can always be more perfect."
The pair were 14th four years ago so Randall was happy with their trajectory, saying: "In Beijing we didn't make the final so it was great to be in it at this Olympics and hopefully for the next Olympics we'll be even higher."
The Russian duo of Natalia Ischenko and Svetlana Romashina were in a class of their own with a haunting routine inspired by horror films Surprisia and Sleepy Hollow.
They scored 98.900pts on Wednesday - just 1.100pts off perceived perfection - which, when added to their technical score, gave them a combined total of 197.100pts out of a maximum 200. Spain were second, 4.200pts behind, having leapfrogged China.