Instructions:Just enter the above codes into the Promotional offers section on the Emirates booking page.
The UKBARC1 code takes off about 4% or so, not sure exactly how much, when you enter the code and use your Barclaycard to pay for it. This was posted before but it seems to have been expired but the deal is ongoing.
There is also a HSBC one for HSBC cardholders but not sure if that still works. Its UKHSBC1 if anyone wants to try it.
The UKCOMPJ is the companion fares deal to certain destinations. It is basically two discounted Business Class tickets to select destinations.
The First Class equivalent code is UKCOMPF and same sort of rules apply to that.