Facts are:
1) Freight market currently suffering from some over capacity so certainly not enough money in it for BA to invest in freighters.
2) BA is currently short of money for anything and has said they do not intend to aquire any long haul aircraft of any sort during the next 3-4 years. Their focus is on the Pension fund ( NAPS) problem and general debt reduction, though some of this is academic as it relates to potential exposure on leases rather than cash they actually owe here and now.
3) Aquisition of cargo aircraft therefore is very low priority and just wont happen. There is a current need for more passenger 777s but a)none are available for the next 2 years and b) as above, they havent got the cash. As result they are having to watch market share erosion by Emirates, Cathay et al and are simply managing relative decline.
4) For BA a pure freighter operation has to be farmed out or not done at all. Hence it is not "BA work" from the staffing point of view.