id66 wrote: Sorry. I'm back 
I should have some paperwork re my diagnosis this week. Earliest would be Wednesday, more likely is Thursday or Friday.
When would be too late to send it off?
Or should I just send it to DWP and ATOS anyway, regardless of when it arrives?
Once you have had your assessment it is too late to send a copy to ATOS, but you can still send it to the DWP until a Decision is made. Obviously the sooner you send it the more likely it is to have an effect on any Decision that is made on your claim.
Gordon