EPS, Implementation and Business Change, NHS Digital:
General enquiries: 0300 303 5678 – email@example.com
Link to EPS front page http://systems.digital.nhs.uk/eps Links at the bottom of the page are useful.
http://systems.digital.nhs.uk/eps/gppractice has FAQs at the bottom of the page.
http://systems.digital.nhs.uk/eps/dispensing Similar for Pharmacy staff
http://systems.digital.nhs.uk/eps/dispensing has many links around responsibilities and the activities that should take place for a go live.