deceased grandfarthers medal intitlement

could anyone advise me on how 2 go about tracing what my late grandads medal intitlement is or was...he served in the worcesters between 1920-46 in 2nd betalion A and C divs..thanks
History and Research
http://www.worcestershireregiment.com/forum/
http://www.worcestershireregiment.com/forum/viewtopic.php?f=1&t=1300