You can also find the routing strings for an easyJet and a Monarch GCTS to EGCC trip in this topic on PPRuNe:
http://www.pprune.org/flight-ground-...-question.html
There also is another relevant pdf file in the site kestrel757 suggested, namely this:
http://www.worldairops.com/NAT/docs/...AirOps.com.pdf
which - should - show a chart of T9/16 airways, among others.
The only catch is that it requires a free plugin to work and when I installed it my pdf viewer stopped working... also tried with google viewer but no luck... so all I see is a beautiful empty chart with airspace boundaries but no routes on it and thus can't guarantee for anything, but maybe you'll have more luck than I had.
Best regards
Adrian Owen