The latest MFF for 2017/18 and 2018/19 is published by NHS Improvement here Annex B1: The national prices and national tariff workbook (sheet '12 MFF Values')
The MFF for 2016/17 is published by Monitor here in Annex 6A - Market Forces Factor payment values to the 2015/16 National Tariff document.
The MFF for 2015/16 is published by Monitor here in Annex 6A - Market Forces Factor payment values to the 2015/16 National Tariff document.
The MFF for 2014/15 is published by Monitor here in Annex 6A - Market Forces Factor payment values to the 2014/15 National Tariff document.
The MFF for 2013/14 is published by the Department of Health here in PbR tariff information spreadsheet for 2013 to 2014.
The MFF for 2011/12 was published by the Department of Health here in DH_125398.xls.
The MFF for 2008/09 and 2009/10 are available here - this index has been used in our online models for 2010 data.