Yes, indeed PC767, there is some concern among the European 'social partners' that although BA have followed due process in the lease application with the UK CAA, the DfT has been rather quick to approve it and anecdotally, I've heard that the EC is watching closely from the point of view of enabling EU registered AOC holders to wet lease capacity from non-community carriers on a regular or more organised basis. The BA arrangement could be seen as the thin end of the wedge perhaps. Although the duration of the lease is from the 1st to 16th July, "..additional periods, yet to be defined, for a maximum of two months" are described in the CAA's response to the DfT.
That said, this is peak season, BA did consult their usual home based ACMI suppliers and this lease application was only sought after BA was assured that there was insufficient capacity from these sources. QR are IAG shareholders and, with significant spare capacity currently, it made sense.