Channel 4's new four-part series, Sex Tape, starts on Friday at 10pm.

It follows three couples per week as they record the intimate aspects of their relationships and discuss the issues they are having.

They then share their footage with the other two couples involved.

Is it too much?

Will it make for uncomfortable viewing, and what does it say about the kinds of people who agree to take part?

Ed Smith and Jennifer Gannon discussed this and more in our TV slot.