Give Andy Farrar at AirData a call (01293 400888).
The flightplanning programme is in-house (so under your
control) and includes route-specific notams, opmet, sigwx
charts, etc. It can be as simple or as complex as you want or
need. It can also be accessed from your desktop PC, and will
allow you to email flightplans, or dump to your LAN.