Attrition since 2006 at 31st March:
Retirement went from age 55 to 65 in 2007, it seems to have reduced retirements by about 30/year so far. Those 30/year will mostly be spread over a rolling next 5 years as most will go at about 60. Numbers in brackets are the actual retirements so far. A constant 40'ish/year are ill health.
Current joining seniority is 3225, SH command is 2473, LH command 1122.
The big worry is OpenSkies. If routes start going over (like at JetStar, ClickAir) no matter how many retire your seniority will remain stationary for ever unless you change contract to lower terms, presumably.
These numbers were published before the expansion a/c were ordered, 4 x 777's in 2009 (though one already lost due to Hatton Cross!). Don't treat these figures as Gospel.
2006 112
2007 133 (100)
2008 109 (80)
2009 71
2010 83
2011 109
2012 119
2013 101
2014 90
2015 116
2016 101
2017 74
2018 72
2019 83
2020 108
2021 147
2022 158
2023 163
2024 138
2025 117
2026 106
2027 109
2028 86
2029 93
2030 77
2031 66
2032 69
2033 61
2034 39
2035 28
2036 14