Who does SWP Portugal handle?
To the best of my knowledge ... No one
Again, to the best of my knowledge, SWP bought Servisair with the intent of setting up an Handling company. Believe that they waiting for a licence to start activity as Handling operator.
The activity of Servisair was essentially a service of representation and assistance with documentation (flightplans, meteo, and maybe slots), but they were not a company licenced to provide handling, at least not licenced to provide handling airside (GPU, stairs, pushback, etc)
Happy to be corrected ...