At Notts, the Portuguese new case rate is falling, but is still more per head than the UK, but I expect in a week or so there will be a review of the corridor. You then seem to conflate media reporting with Government decision making, the 2 are separate.
Since the corridor to Spain was shut, the Government has also has imposed quarantine on those returning from Luxembourg. So it appears that the decision makers are monitoring the small countries as well. I expect Belgium to be soon, maybe the Netherlands as well.