GOMOBILE23 is coming up c.9.3% less with than without for LHR-CPT travelling the first week of March, Business Classic fare. That code only works in the QR app though, not the desktop or mobile websites.

The codes and T&Cs, routes and dates can vary between departure countries, and for some you need to be logged in to your QRPC account first or they don't work.

In addition to the global codes there are often more that are country or payment channel specific. There are several current ex-UK codes here for example:

https://www.qatarairways.com/en-gb/o...id=ALL32451830