ECM overturns decision - how long for visa?

[wayne78]

Hi all,
With some support of my MP the ECM has overturned the origanol ECO descision and requested the passport be sent for immediate issuance of Visa. (25th July)
She has sent her passport via VFS Lanka to Chennei (26th July) and we are both unsure as to how long we will have to wait for the Visa and Passport to be returned.
Could someone give some idea of time line?

Story so far
Applied VFS Lanka 14/09/2012
Refused 02/02/2013
Appeal lodged 27/02/2013
Descision overturned 25/07/2013
(letters written to MP every 2-4 weeks)

[king2be98]

You're looking at somewhere between 15 and 20 days on average.

[wayne78]

Thank you.