All of the major schools have their good times and their bad times. I can well remember BAe losing contracts, including their share of the BA ab-initio contract, because of their pompous, customer-unfriendly attitude back in the mid-nineties, at the same time that Oxford was being officially credited by the CAA as setting the standards for the industry.
Now BAe appears to be in the ascendent and, I am reliably informed by an ex-colleague, Oxford did so badly in their last CAA inspection that they received only a three month provisional approval to allow them to get their act together.
Potential customers of OAT would be well advised to ask to see the current approval certificate and compare the issue and expiry dates.