Most of the criticisms of the Pj seem to be concerned with things they didn't do. (in the opinion of unqualified people)
No credit is ever given for the huge amount of effort they did put in.
I am not deflecting by pointing out the factual failings of The Metropolitan Police, I am pointing out that we in the UK don't have a perfect police force even if some people like to think we do. Elevating the Met above the PJ is a symptom of a biased viewpoint.
There seems to be a misconception that criticism of the leadership of the particular PJ team which investigated Madeleine McCann's disappearance amounts to xenophobia. It is what it is ... and that is recognition that Mr Amaral led his team in entirely the wrong direction.
The Rebelo investigation carried out diligences which took all aspects of what might have happened into consideration ... particularly the theory of abduction
Correio da Manha - 30 October 2007**snip
In the company of the team members that he brought in from Lisbon - composed of two homicide inspectors, one from sexual abuse, another that is experienced in robberies and two specialists in technical analysis - Paulo Rebelo tried to find details and loose ends that may open new leads or confirm the existing ones.
The investigators entered the apartment around 3 p.m. and soon after opened the shutters of the window to the room where Madeleine was sleeping with her siblings on the night she disappeared. Next, they passed a blue blanket through the window, folded like it was covering a child's body.
Paulo Rebelo was even one of the elements of the team who paid most attention to the window, having risen and lowered the shutters several times, apparently evaluating its operation.
Moments later, the team turned their attention on the rest of the house, and on the veranda and the garden that is located on the back side of the apartment.
Here, the inspectors analysed the height of the bushes and the firmness of the balcony, as the leader of the investigation entered and left the apartment several times.
One of the inspectors brought a drum into the house, containing a liquid that was not possible to identify.
http://www.mccannfiles.com/id21.html Paulo Rebelo examines Apartment 5A on 29 October 2007It should be noted that Mr Amaral's theory was discarded and the Portuguese press started printing about Madeleine's abduction again ... unfortunately the case was archived instead of building on the conclusions of the Rebelo team.