I regularly travel between the UK and Munich for work (approx 40 return trips per year). BMI Regional are by far the worst airline I have ever travelled with in terms if punctuality and customer service. flights are frequently delayed by several hours, or even cancelled. Obtaining compensation / refreshment vouchers is next to impossible. Customer service is almost non existant, when you do manage to speak to someone from the airline there is rarely any information provided of use.
The ticket prices are extortionate for the service provided.
The only plus point is that the on board crew are usually polite and helpful, but this is not always the case either!!