Bundee Aki, the newly-appointed Baa Baas captain, is a Grand Slam winner with Ireland with seven victories from seven starts since making his international debut against South Africa at the Aviva Stadium last November.
"I'd like to thank Ireland head coach Joe Schmidt for making Bundee available to us as he'll be a big asset for the Barbarians," said Bristol head coach Pat Lam, who brought Aki to Connacht from the Chiefs in 2014.
"The big thing about Bundee is that he's an unbelievable competitor. A lot of the Pacific Island boys have that X-factor but he loves putting his head in the dark places and thriving in turnover and contact work.
"He's a huge leader on the field and he has a great understanding and passion for the way I like the team to play. England is a game we're going to have to work hard in and he epitomises what we need to do. We need the courage to play and move the ball and also to know when we have to tighten things up, and he'll be at the centre of that."
Lam already recruited superstar full-back Charles Piutau, who is leaving Ulster to join Bristol, and former Scotland captain Greig Laidlaw and more players will be added to the squad later this afternoon.
The Barbarians have faced England 16 times and are searching for a first win since the 39-29 victory in 2014. Last year's contest saw England finish 28-14 winners with tries from Danny Care, Nick Isiekwe and Nathan Earle with Adam Ashley-Cooper and Joe Tekori replying.
Tickets for the upcoming Quilter Cup match between England and the Barbarians start at £25 for adults and £10 for children, and are available at www.englandrugby.com/tickets.
