Here are a few links to extremely useful and interesting videos presenting the speaking part of a Cambridge exam. I hope you will find them helpful when preparing your ESOL exams.
Talk about yourself – http://goo.gl/FbRYgW
Describe a photo or picture – http://goo.gl/OjCEWS
Discussion – http://goo.gl/U651l1
Information gap – http://goo.gl/0VDqV4
Tell a personal anecdote – http://goo.gl/YQW4WX
Oral presentation – http://goo.gl/XKu028