BHD-LHR Winter Schedule
Yes 0735 does seem a bit late, but in practice will be OK for most.
The 1200 first flight on Sunday does seem odd, though there is always the 0715 Codeshare with Aer Lingus. Yes, the Aer Lingus codeshare from BFS is still bookable with connecting flights!
The early sunday flights are mainly connecting passengers after all.
Perhaps the Aer Lingus codeshare is why flights appear to be oddly spaced? BA flights themselves are fairly evenly distributed throughout the day.