Hunter-Reay made his debut in the end-of-season showcase in 2012, after winning the IndyCar title, and the November 20-21 event at the Olympic Stadium will be his third-consecutive appearance.

The American joins a line-up including Formula 1 drivers Sebastian Vettel, Daniel Ricciardo, Felipe Massa, Nico Hulkenberg and Romain Grosjean, double MotoGP champion Jorge Lorenzo and nine-time Le Mans 24 Hours winner Tom Kristensen.

“It’s great fun to go head-to-head with some of the best drivers from the top motorsport disciplines from around the world,” Hunter-Reay said.

“It’s a unique challenge to jump in and out of all the cars – when you get such a short amount of seat time in each.

“However, last year I won five out of my six races in the groups so I hope I’m starting to get the hang of it.

“Now I’ll see if I can convert that into a good run through the knockout stages too.

“I’m proud to represent America, IndyCar and the Indy 500 in such a prestigious event and I look forward to hearing the noise of the crowds at London’s former Olympic Stadium later this month.”

2015 RACE OF CHAMPIONS LINE-UP SO FAR

David Coulthard
Mick Doohan
Romain Grosjean
Nico Hulkenberg
Ryan Hunter-Reay
Tom Kristensen
Jorge Lorenzo
Felipe Massa
Nelson Piquet Jr
Jason Plato
Daniel Ricciardo
Petter Solberg
Sebastian Vettel
Susie Wolff