These roster/fatigue examples are part of the reason I retired from BA 747 longhaul at age 60 - I could have continued to 65. My problem was the relatively easy time I had over the preceding years as a 767, 777, and 747 Captain enjoying reasonable seniority and usually max 4 trips a month. As the company began to increase the pressure I should have taken part time but the 5 trips in a month 900 hours sort of took me by surprise. My last 2 years both were 900 flying hours to the minute !!
I realise this is a "golden years" sort of post but I hope new joiners realise that things have changed in BA and are likely to remain so - part time is an answer but rostering changes are really the cure. Hope JSS at least shows BA they need more flight crew.