The MAN-ISB route is an unusually attractive opportunity because PIA are banned from the UK until the issue relating to dishonestly acquired pilots' licences is resolved. Checks are also reportedly being made on maintenance staff and cabin crew qualifications. PIA would fly upto daily on MAN-ISB with 400+ seater B77W aircraft in normal times. They were one of the very few carriers which did maintain MAN operations during the March - May lockdown, and freight is a factor too. It is a high-demand route even in these difficult times and Virgin are sensible to go for it.