Bit of background........
Big move happening (170 miles) in July/Aug.
I have a new job but unable to hand in my notice until my references are studied (prospective bosses are both on A/L until next Tues). So realistically, that isn't going to happen until the end of next week at earliest.
I have to give 3/12 notice; if I get the official letter by next Fri (11th) then we will be too late for DD (8) to start school on July 2nd - this would be my preferred plan for the following reason....
The school she is going to is very different, it's about 1/4 the size of what she has now, and they join years together (1&2, 3&4, 5&6) so the Head was suggesting a July start so she would be in the most appropriate class for Sept. and would also make some friends before starting properly in Sept.
But I can't see this happening with all the delays.....unless my boss allows me to leave earlier than 3/12 - not sure yet if that is an option. Very annoying because all paperwork has been received today - but with the BH & people being on A/L until next Tues it's all being delayed by another week.
Has anyone experienced the same sort of delay in starting a primary with a similar setup (mixed year classes), and if so, were your DCs affected by not starting in July?
Having posted this, I bet I'll find I can leave earlier than I think! 
Would be very grateful for any advice. Thank you.