In addition, it is generally believed to be less liable to rolling off the ends than the flat figure-of-eight bend (not to be confused with the standard figure-of-eight bend/flemish bend)
The NHS (or at least my GP's surgery) does not allow you to register as "Dr" and I wouldn't be surprised if they lacked a mechanism to change from "Ms" to "Mrs" (or any ability at all to change the title field).
I suspect they used to use title as a proxy for gender but this wouldn't be very sensible so maybe it's just there for historical purposes or no particular reason.
There's a (presumably unofficial) desktop port of OsmAnd (called offroad) although I don't know how stable it is/how it's implemented. I agree that a fully functional and more general compatibility layer could be rather useful.
I can't speak for this OS but I use OsmAnd (http://osmand.net) in place of google maps on cyanogenmod and it does do a reasonable job of voice navigation (using the same OpenStreetMap data as uNav). It's open source so it should be able to work in principle.