You might get some information from 172nd Field Regiment's war diary for the period January to May 1943 which is available under the reference WO175/342 at the National Archives at Kew.
Such diaries do not always mention individual soldiers by name but will probably include general details of casualties.
I can recommend a reliable researcher (not me) who could provide a copy of the diary for a fee. Send me a Personal Message if that is of interest and I'll provide his details.
Jon
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