So recently Kake and I have been adding Public Domain Geodata to our Guide to London using a Garmin Etrex she has been borrowing from a friend. However, it possibly has one of the one most annoying interfaces i've used for a while and we only have one.
So, I succumbed and bought the Nokia LD-3W which works with my phone. I can get location data with applications which came as standard and indeed save landmarks which I can then export as an xml file. I cant get any routes though. However, I did find an application from nokia research which almost gives me what i want. It can export trip data as kml. So for your viewing pleasure My trip to the butchers this morning. It jumps around quite a bit.
One problem is that I can only get Lat/Long out when we are using OSGB for the guide. Thankfully, the windows program the Ordnance Survey provide to convert between them can run under Wine. This will make mass conversions easier.