Thinkbroadand.com reports that Openreach will be commercially launching FTTC self install at the end of September 2014.
http://www.thinkbroadband.com/news/6612-fttc-self-install-gets-the-full-commercial-launch-tick-on-29th-september.html
There is no reason why IDNet cannot offer it after that date. I hope they announce their intentions soon.