http://bugs.winehq.org/show_bug.cgi?id=18158
--- Comment #15 from David Hedberg david.hedberg@gmail.com 2010-02-23 23:42:27 --- Sorry for the noise, but my above suggestion might not work as wine also seems to reset the locale to the current one (.. sometimes).
Another way, hopefully working, is to temporarily set the current locale to UK when starting wine, something like
sh -c "cd /home/wine/drive_c/lotus/approach; LC_ALL=en_GB.utf8 /usr/local/bin/wine ./approach.exe"
should accomplish the same thing.