In any case, the Judge hasn't laughed at the Met's request to interview multiple witnesses and suspects, or to carry out various searches. It's clear from the scale of the operation the Met are carrying out in Portugal that Portuguese authorities are taking the requests very seriously indeed.
The 'sources' who are trying to downplay the Met's activity in the Portuguese media appear to be a small number of very bitter ex-officials (that crackpot who used to be in government for one, and I've no doubt Amaral's fingerprints are to be found somewhere behind CdM's stories).
The truth is, this is a large scale investigation by the Met that simply would not be happening without both cooperation and permission on Portugal's part. There have been no information released by either the Met or the PJ via official channels - any leaks are more than likely coming from people either on the periphery, or who are simply making things up.