Details on the win have not been revealed by Ash Gaming or Betfair, but we can confirm that the win did indeed occur and is the second win we have recorded for the game since we began tracking the slot back in November 2013.
The win is the largest we have on record for the game, trumping the £340,466 win that took place on August 12, 2014 at Sky Vegas.
The Chests of Plenty Jackpot is won when a player gets three Scatter symbols to get to a bonus round wherein players select treasure chests. If the treasure chests reveal three white diamonds, the player wins the game's top prize.
Casino Listings will update this story as more developments arise.
Related: Chests of Plenty Jackpot