BMED LHR
CitiExpress was born following BA's acquisition of BRAL. CitiExpress brought together what was Brymon, BRAL and Manx Airlines. It was headquartered in Manchester with back office in IOM. CitiExpress became BA Connect.
For a while the regional BA ops (ATP's etc) out of Manchester carried British Airways Express titles, but this is/was separate to CitiExpress (I believe).
Hope that helps