The third and final part bounced back up to 4.6 million, winning the 9PM slot.
Earlier on ITV, Britain's Brightest Family continued with 3.5 million - up 200,000 on last week - while on BBC One 3.3 million watched Earth's Natural Wonders.
The star has kept his muscly physique since leaving the show, which ran from 1992-2000.
He now works as a fitness writer, speaker and trainer and regularly posts fitness updates for his 28,500 Instagram fans.
With the same girls coming back each week, show producers hope viewers will get to know them as the series progresses and Mc Guinness tries to match them up.Transmission details are yet to be confirmed, but the show is likely to go out on ITV1 on Saturday nights in the new year.Miss Bedell said: ''I've long thought ITV should be back in the prime-time dating game and this is a great new, modern, dating show for ITV.The three-part psychological thriller centres on the lives of two fathers, Dan and Jon, whose lives collide when Dan’s 15-year-old son Alex is stabbed and tragically dies in the trauma department attended by high-achieving consultant Jon Allerton, who is blamed for the death.The first episode averaged 4.9 million viewers but numbers fell to 3.8 million for episode two.J’établis avec eux des relations privilégiées, qui parfois, se poursuivent même une fois le contrat rempli.Par exemple, l’une d’entre eux m’a invitée à son mariage.La faire parler d’elle, la complimenter, flatter son ego ! Je suis amoureuse, même si mes relations n’ont pas toujours été évidentes. Désormais, je m’aime suffisamment pour aimer en retour.Les gens ont besoin de sentir qu’on s’intéresse à eux. Au point d’avoir tout quitté pour partir vivre dans la jungle !Talking about her role on the show, Crossley said: "She used to be a Gladiator.She was one of the new breed."Gladiators came back on Sky about eight years ago.