BA seem to have virtually shelved this subsidiary. The economic situation changed drastically just months after its formation, resulting in cancelled routes and the planned expansion was also cancelled.
(Wikipaedia: In February, 2009, British Airways announced that they would not transfer additional 757s to its OpenSkies subsidiary by the end of 2009, as originally planned, but instead would sell them to a third party. OpenSkies was originally to expand to six aircraft by the end of 2009, but BA said this plan had been canceled.)
Open Skies merged with L'Avion and now operates under a French AOC. I'm sure BA would not have allowed this if they had any long-term plans.
LJ