BA's
2011 Annual Report says (Note 9, p. 33) that the value of the flyBE stake was written down by £16m in 2011 (on the back of a £15m writedown in Apr-Dec 2010).
Note 18 (p. 44) suggests that the stake was valued at £24m as of 31 Dec 2011 (based on share price), which would have put flyBE's total market cap then at about £160m (BA's holding is 14.8%). Hasn't really been a stellar investment for BA (or for other shareholders).