<prompt> Ramba uchiverenga ndima iyi - Pamakwikwi eOlympic eZhizha a2012 muLondon, Halsall akakwikwidza mumitambo mishanu. Halsall akasvika kuma semi-finals e100m butterfly, achinyora nguva ye58.52, kure nemwaka wake wakanakisisa we57.56 wakaiswa muna March. Halsall akapinda mumakwikwi ekupedzisira emamita zana akasununguka uye makumi mashanu akasununguka  <response>: , vachipedza vari 6th na 5th. Mu 4 × 100 m freestyle relay Halsall akahwina muchikamu chechipiri muchikamu che53.29, achibatsira chikwata cheBritish kusvika kunzvimbo yechishanu. Mumakwikwi ekupedzisira e4 × 100 m medley relay chikwata cheBritain chakapedza chechisere, naHalsall achipa gumbo reanchor re54.08. 