The British JRM Racing squad has opted against continuing in the World Endurance Championship this season and will instead focus on its LMP1 campaign on a one-car assault on the Le Mans 24 Hours.
JRM, which moved into P1 with an HPD ARX-03a last season, announced on Thursday that it did not file an WEC entry but did put one in for Le Mans ahead of Wednesday's closing date for entries.
Team owner James Rumsey said: "Le Mans 24 Hours is the highlight of the endurance calendar and brings greater opportunities for brand visibility than any other event.
"In our first-ever Le Mans we finished in sixth overall, with very little running beforehand, and we are extremely excited about what we can do in our second year. We remain open to competing in events of the WEC or other sports car series, and we have a number of options we are pursuing. But for the moment our goal is to work on securing the long-term partnerships required to enable us to compete and succeed in the world's most famous motor race."
News of JRM's decision to run its HPD only at Le Mans further reduces the number of P1 prototypes likely to race full-time in the eight-round WEC.
Rebellion Racing, the top privateer in the series in 2012, looks certain to run one car rather than last year's two in all the events. OAK Racing is understood not to have made a full-season WEC entry with its eponymous HPD-engined chassis. Strakka Racing will continue with its HPD.
JRM, which ran David Brabham, Peter Dumbreck and Karun Chandhok in its P1 entry, will continue developing and building Nissan GT-R NISMO GT3 racers.