@SuperChihuahua posted a link to http://www.ciphermysteries.com/2012/11/02/dead-pigeon-sparks.... According to the author of that document it may have been Sergeant William Leslie Stott (508080 in the RAF, died in 1945 aged 35, buried in Chester’s Overleigh Cemetery) [1]. The spelling of "Sergeant" matches.

[1] http://www.cwgc.org/find-war-dead/casualty/2928300/STOTT,%20...