ESA - REASSESMENT - STATE PENSION DATE

Background info
IB to ESA S Group Feb 2013 for 18 months.Due reassessment by Aug 2014.
Then introduction by DWP of 2 year gap period for reassesments.
Reassesment now due by Aug 2016.I am anticipating papers will arrive for me to complete April 2016.
March 2016 DWP Pension section have written to me setting out my state pension figures that will be payable to me from mid July 2016.I understand that once in receipt of S/P my ESA will cease.
Questions
Should I just complete paperwork when received ? Should I contact contractor assessment team for advice?Should I contact ESA Help desk for advice? Do you have the Tel number?
Many Thanks
misterm

Many thanks for your reply/info Gordon.
M

Update on earlier post re state Pension.I reach SP age 17/7/16.I wrote to ESA office dealing with my claim 12/4/16 and sent copy of letter I received from DWP/SP confirming the date for change.I sent letter S/D Signed for and received confirmation that letter had been received.To date I have not received reply from DWP/ESA giving me date for final ESA payment.ESA was originally paid 2 weeks in arrears and SP is also paid 2 weeks in arrears.Should I wait and see what payments are made to see if they have connected up information provided ?
Also my current award for ESA was due 08/16 but not received any paperwork so hopefully this is an indication that they have connected info provided.!!! Wishful thinking !!!
Thanks

You should not have to do anything else as long as ESA payments stop as expected. If they do continue you should put them to one side and contact DWP as they will expect it to be repaid!

Many Thanks for your comments / observations Mrs H. I will follow your guidance on this.