Loganair have a fleet of 30 aircraft serving 28 destinations and carried 765K pax last year with a load factor of 62.8%. They will be offering about 17K seats p.a. on GLA-LDY-GLA.
BMI Regional have a fleet of 20 aircraft serving 27 destinations and carried 415K in 2016 with a load factor of 54.1%. They offer 60K seats p.a. on LDY-STN-LDY.