We changed our reward point system in late 2014 to a flat rate of 10 reward points for every pound spent.

But due to an error in the system it actually gave existing loyalty program customers the new flat rate of 10 points per pound spent AND their old loyalty reward system amount of 17 points as well. So rather than getting 10 points per pound a group of existing loyalty customers were getting 27 reward points per pound.

We also gave 500 points to compensate existing loyalty customers for the change in the system back in 2014.