The 29-year-old British driver competed in the Blancpain Endurance Series last season, finishing in the top-10 three times, including a podium finish on his Total 24 Hours of Spa debut.
Nash decided to switch from the five-round Blancpain Endurance Series to the seven-round Blancpain Sprint Series, in order to get more races under his belt.
“I’m excited to be driving with WRT again and to be making my debut in the Blancpain Sprint Series,” confirmed Nash. “I’ve chosen to race in the Sprint series in an attempt to gain more ‘seat’ time as there are Qualifying and Main races each weekend.”
Most of the circuits on the 2015 Blancpain Sprint Series calender are new for Nash.
“Out of the seven venues in this year’s Sprint Series, I’ve only previously raced at Brands Hatch and the Algarve so I’ll be learning many new tracks again.”
Nash will combine his Blancpain Sprint Series campaign with a British GT Championship entry, where he is set to race in an UltraTek Racing-entered Lotus Evora GT4.