Cloud1: As Adfly has pointed out, the increase means that there are now three departures within 2 hours. In your 'professional opinion' can you please tell us the business case for this frequency? We are all ears to your 'professional opinion'.
If you don't mind me asking, do you live in the vicinity of SOU? You cannot underestimate what the arrival of KLM means for SOU, the world has literally been unlocked. A lot of visitors to SOU (chiefly the Asian students) will be more likely to rely on an internationally known airline like KLM than they would BE. This will over time build a reputation for SOU to international travellers. If BE drives KLM away then SOU is back to square one.