our sponsor paid landing fee years ago as it can b submitted any time.
files transfered from islamabad to london in starting months of 2014
they start processing our application on 27th july 2015
(27th july is the date of our medicals and before 27th july we hav submitted updated docs police certificates to them)
got passport copies request via email on 8th sept 2015
we submitted scanned copies on 22nd sept 2015, on 25th sept 2015 they emailed us tht ur file is ready for visa issuances kindly refer attachemnt. in which they asked original passport, appendix A ,B and corresponding letter(pdf itself a corresponding letter)
passport submission in islamabad office via vfsglobal.
we submitted our passports in karachi CVAC(vfsglobal center) on 30th sept 2015 , and received the same wd visa stamped n copr on 5th oct 2015 Alhamdulillah

vfsglobal is responsible for transmission of passports to islamabad office and they hav 3 CVACs in pakistan , islamabad,lahore n karachi
Best of luck!