Royal National Theatre UK
Voice – English
Online lessons by the National Theatre which teach you how to use voice for acting. They are also very useful for anyone who wants to improve their speaking skills.
BBC
The trip – English
Two well-known British actors, Steve Coogan and Rob Brydon, show their extraordinary vocal skills based on improvised talks while driving around the north of England and eating in top restaurants. .
YouTube
Using voice techniques for public speaking – English
On Youtube there are a lot of useful tutorials that teach how to use voice effectively for public speaking.