AG Barr is backing Rockstar Energy Drinks with a new on-pack promotion linked to American comedy TV series Entourage.

The promotion is running throughout June and July across 99p pmp of 500ml big can flavours in Original, Punched Guava, Xdurance Blueberry and Xdurance Electric Fruits.

Top prizes include the chance to win a VIP trip to Los Angeles and the opportunity to attend a private Entourage movie screening and tour of the Warner Brothers LA Studios.

Adrian Troy, head of marketing at AG Barr, said: “The last on-pack we ran increased sales by more than 30%, so this is a great opportunity for retailers to increase their energy sales.”