DfT's announcement concerning training resumption for commercial pilot cadets is a fudge. When DfT issued their last piece of guidance stating that training couldn't resume, they hadn't realised that the CAA had just provided Leading Edge Aviation at Oxford with a letter of no objection, when LEA wrote to them stating that they intended to resume training, and provided the Authority with details as to how they would manage it in a responsible manner.
Note, this was not an approval from the CAA for LEA to resume training, as they don't have the authority to approve resumption of training (that power lies with central government), and can only issue guidance, which is why I think their guidance for maintenance check flights was an omnishambles, given that the terminology was definitive rather than advisory - 'you must, you must not, you are only permitted, etc'.
When it was brought to the DfT's attention that commercial flight training was resuming due to the CAA endorsing LEA's impressive return-to-work plan, DfT came up with the critical worker definition for commercial pilot cadets.
The reason I says it's a fudge is because a) defining a cadet pilot as a critical worker is stretching the definition of critical worker to the outskirts of Barnard Castle, and b) this 'approval' ignores the modular training route, which requires the resumption of grass-roots PPL training for those commercial pilot cadets not rich enough to pay to go down the integrated training route to reach their 'critical worker' status.