UK National Air Traffic Control Services (NATS) publishes the Standard Route Document (UK SRD) updated each AIRAC cycle. It can be downloaded free from its site although you have to register.www.ais.org.uk/

but only users from within the british isles are allowed to access this site.

You can also get it from the jeppesen.com website ;-)http://www.jeppesen.com/wlcs/index.jsp?sec...ecial_pubs.html