I have a draytrek 2860 but when I log into the web interface, the red bar on the left hand side for the navigation menu is missing so text is not visible against the white background but it works fine in FF or chrome,

is there a fix to get the red bar to appear?

try clear browser history & cache, if not works set the IE with compatibility mode
There is also a beta to try here
http://www.forum.draytek.co.uk/viewtopic.php?f=19&t=19313&p=80509#p80509

Try DISABLING compatibility view on IE10. Tools > Compatibility view settings> Untick "Display intranet sites in compat. view"

I have already tried disabling compatability mode and also adding the URL to the compatability settings. both with no luck.. is this a known issue for drayteks because I just tried with a 2830 and i cant even login as the login panel doesnt load properly. works perfect on other browsers but there is just an issue with IE

I have the same issue. Even thge latest beta does not work with ie10. I have tried all compatability modes.

Very strange. Works fine here. Never had an issue with IE.