CAS Issuance for International Students Watch
In my case, the timeline is as follows:
Accepted unconditional offer - 14 May 2018
Paid advance tuition fee instalment - 18 Jun 2018
Email from uni requesting to complete ‘Tier 4 CAS Evidence Request’ form and submit other required documents - 19 Jun 2018
‘Tier 4 CAS Evidence Request’ form and other required documents submitted - 19 Jun 2018
CAS issued - 25 Jun 2018
Online Visa Application made - 26 Jun 2018
Submission of documents and biometrics done at VFS - 28 Jun 2018
Email from VFS stating that passport is ready for collection - 3 Jul 2018
Collection of passport (Tier 4 visa approved!) - 4 Jul 2018
Please note that I paid for priority visa application so it was processed a lot faster.
Hope you find the above useful!