http://forum.bdp.betfair.com/showthread.php?t=3400We are pleased to announce that we’ll be shortly releasing a new Betfair Exchange Historical Data service which will provide time-stamped Betfair Exchange data for purchase and download.
All data will be provided in the Exchange Stream API (json) format. Fully time-stamped data will be available going back to ~April 2015 for all sports.
We expect the new service to be available to all customers before the end of May.
Betfair Developer Program
With it being json/streaming format its not going to easy to work with if you don't handle streaming data already, I wonder if they will make it possible to feed it through third part apps such as BA.