KET Speaking test lasts 8-10 minutes.
You will do the speaking test with another candidate. The two of you will meet two examiners. One of the examiners will talk to you, the other does not particpate in the conversations.
There are two parts to the speaking test:
Speaking part 1: short questions and answers between you and the examiner
Speaking part 2: the examiner gives you some information or a card with some ideas for questions. You have to talk with the other candidate and ask or answer questions.
The Speaking section is worth 25% of the total score for the exam.
KET speaking part 2 practice videoclip is attached here.
(In the actual test, you as a candidate will talk with another candidate, not with a teacher, in this part 2.)