Whilst I don't agree with all of the posts with regards to the No Diversion policy, I did have a quick thought, taking into account MANFOD's comments with regards to inbound delays.
If Ops at Manchester are taking weather into consideration then maybe the No Diversion NOTAM would ensure that no 'fuel shortage' calls were made by inbound diversions, thus causing additional delays to our own traffic.
I will now go back to more important thoughts.
Come on clutching at straws here, delays happened irrespective of diversions and it's not as if MAN was been asked to taken hundreds of them and operating at 100% capacity.
Well if my sources are correct, there were AT LEAST 8 remote stands that were not used at all from 1945 until 1015 this morning, with the number peaking at 11 by 1020........
Lack of stands is obviously a fallacy!
That's a lot should of taken a max of 5 diverts really and get a few free for un expected problems.