For Language file, see here:
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For Voice file(s), try these:
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[Only registered and activated users can see links. ]

For Speedcam file translate the following phrases into what you want spoken, and I will make one for you:
Spoiler: See Text
Warning! Speed camera.
Warning! Possible mobile speed camera.
Warning! Possible roadside inspection.
Section Speed camera Ahead
Traffic Light Speed camera Ahead
Warning! Railway crossing.
Bus lane camera
Warning! Dangerous area.
Warning! School Zone.
Entering the city. Slow down!
Traffic Light camera
toll collection point.
Zone of charge for entry.
Warning! Accident Zone.
Speed camera ahead.
Reduce your speed.
Mobile speed camera ahead.
Average speed camera ahead.
Red light camera ahead.
Railway crossing ahead.
Bus lane camera ahead.
High accident zone ahead.
School Zone Ahead.
Town entry point ahead.
Prepare to reduce your speed.
Red light and speed camera ahead.
Toll booth ahead
Prepare to stop.
Congestion charge zone ahead.
Police control zone ahead.
Mobile speed camera ahead.
Dangerous area ahead.