J
In case you are not aware, your real name appears to be showing in the forum, if you want to change this then follow the instructions in the following FAQ
My full name is showing, how can I stop it?
If they work for ATOS or Capita then they will have no access to this information at all. Even if they are working for the DWP they would have no ability to retrieve this information over the phone.
If you have a fixed term award then it would be possible to work backwards as reassessments are initiated about 20 weeks in advance of the DLA ending.
If you have an indefinite award the claimants are being chosen at random and there is no way to know when you will be invited.
Gordon