There seems to be a decline in connecting traffic at BRS overall. BMI to MUC and FRA, recently replaced by LH who have since dropped the route. AF to CDG and Brussels Airlines to BRU, all no longer. BRS is probably seeing the same issue with traffic leakage to LHR as CWL is with BRS. I would imagine a middle eastern carrier would do quite well out of BRS, or Turkish being the main suspect.