"submit a maximum flow rate to Flow Control for the lower levels."
I know that issue has been looked at, then no doubt the training aircraft would file at higher levels. These are obviously training flights as well Chilli not normal flights you only have to look at their flight plans, they always return to their departure aerodrome without landing with several aerodromes filed enroute for training
As I said I'm not at work at the moment so don't know the full background of the new procedure but like Turn It off I was also lucky not to have an overload last year although I several times came very close to it, but have been around in the aftermath of them, in everyone there was an excess of training flights, they are not being denied access which is all the charter states they are simply being flowed.
If you had been in our approach room last year you would equally be trying to get something sorted, it wasn't nice.