@Mampay,
are you flying for Netjets.... If yes, PM me there are few ex Nietjets flying for Norwegian you could contact to have information.
@captplaystation,
Could you confirm that you have to pay tax on per diem? I thought that this was a non taxable item in Spain like in some other european country except UK.
BTW does anyone know what would be the tax rate in the UK as expat (Not sure if you can stay less than 183 days) or as a resident?