SWISS is running a 50 quid return offer from MAN to Basel. Using flight distance it would be 591 miles each way. BMI offers a minimum of 50% miles in SWISS. However, SWISS only gives a set 150 miles for discounted flights for their M&M programme. So my question is, would I get 150 or 591 diamond club miles?
PS: I have not found a way to check the class letter using swiss.com