The Sex Inspectors returns for a three-part run, giving couples experiencing common sexual difficulties practical advice to reignite the passion in their relationship. The show is presented by Tracey Cox and Michael Alvear, who observe the couples’ behaviour in and out of the bedroom before devising a tailor-made programme of tips, tasks and techniques to get them back on track.

Mark (27) and Katie (24) have been together for ten years. The childhood sweethearts met when Katie was just 14 and Mark was 18; he is the only man Katie has ever slept with. Two children later, Katie has lost interest in sex and Mark’s frustration is leading to so much tension within the relationship that both fear they might split up.

Sex Inspectors Tracey and Michael observe the couple’s habits in and out of the bedroom and identify areas of conflict, rejection and mutual dissatisfaction. Will the new tips and techniques succeed in transforming their old routines – and help Mark and Katie salvage their marriage?

This episode will air on Channel 4 on Mon 12 Feb 2007