As per Lraizer's guidance, changed the following line from in "weekepg.cfg" located in /var/tuxbox/plugins/

EPGService=1:0:1:1038:7d4:2:11a0000:0:0:0:

Coupled with his E1 autobouquets, which generates the "dbepg_map.uk" and "channels.uk" files, I could comfortably get 7days epg using the weekepg plugin. (TM500s has no storage device)