Obtaining information after transfer to WRAG

The recent DWP letter which assigned me to the WRAG followed an Atos assessment. I should like to find out when the Atos professional thought I would be fit for work (ie the prognosis) and from that to have an idea of when I might receive another ESA50 or be referred to the Work Programme. This would remove some uncertainty. Previous Incapacity Benefit letters included a review date. Also I should like to know how many points I was given (for mental health issues) and how they were allocated.

If I wrote requesting the ESA85, the ESA113 (if one was requested from my GP) and a copy of any worksheet, score sheet or any similar document which sets out which descriptors the decision maker considered (rather than ask for ALL evidence) would that provide the information I seek? Would this be processed quicker than a letter with a formal ‘subject access request’ under the Data Protection Act 1998 or do you need a formal SAR for them to release any information?

By the way, to whom should I address the letter at the local Benefit Centre?

I am worried about getting all this right and obtaining the information I want as soon as possible.

Also if I send a SAR to the DWP would I have to wait a set time before I would be allowed to send another one to them on any matter?

I have looked at the sample letter. So I definitely have to make a formal subject access request to ensure I receive the forms? Who would you advise I write to at the local benefit centre? The manager named at the bottom of ESA transfer letter?

Thank you.