Last year, the emails came out at midnight but with one enormous glitch - they looked rather like merged documents where someone had just typed in the names of the merge fields, rather than inserting them, before running the mailmerge. The only bit of ours that was correct - sadly - was the part which said unable to allocate any of our preferences
. We all had to wait for 8.30, when they re-ran the batch correctly, to find out which schools our DC had all actually been allocated. In our case, one we hadn't even been to look at - but it has all worked out fine in the end
I think if you look at the Southend on Sea website now, it says that this year the emails will be sent out between 8am and 10am on the 1st.