Some timescales from the First Tier Tribunal FAQ:
http://www.tribunals.gov.uk/Immigration ... s/FAQ6.htm
Appeals lodged with Entry Clearance Offices
For visit visa appeals lodged at post the earliest time an appeal would be heard is, 12 weeks after the appeal was lodged.
For non-settlement appeals lodged at post the earliest time an appeal would be heard is, 16 weeks after the appeal was lodged.
For settlement appeals lodged at post the earliest time an appeal would be heard is 24 weeks after the appeal was lodged.
What happens if I lodge my appeal with the FTTIAC?...
...The Notice of Pending Appeal instructs the Respondent to prepare and send evidence on which they have based their decision to refuse your application to us. They have 11 weeks to provide this for non-settlement cases (including family visitor cases) and 19 weeks for settlement cases.