The fellow that helps me a lot with the Triumph, Matt Capri, has supported race efforts from Triumph in Hinckley, Norton in Donnington, and now Royal Enfield in Chennai. The reasons for listing the locations is that these are the new factories. The rider for the Enfield effort was Nadine DeFrietas, an experienced racer who rode for Triumph last year.
Most of the Enfields we see, both the Indian ones and the older Reddich models from England, are antiquated. The newest models are modern in most respects. The bike they are racing is the Contenental GP which has a unit construction engine, fuel injection, a welded tubular frame, and disc brakes on both ends.
There is an article about the effort in the latest issue of Cafe Racer (October/November 2014). The article says it happened at Speedweek. Not so. It was at the bike speed trials.
Hopefully an article will come along this year that is both up to date and accurate. We might need to wait a month or two until the British publications get over here. Their journalistic quality and level of interest is much higher.