[QUOTE=pandaperth;9493072]
The intinerary involves going to Europe twice - this is allowed when one is a transit to/from certain central African countries. Furthermore when the origin is Africa, there is no requirement to return to the country of origin - anywhere in Africa will do as the end point. So, I suggest you substitute NBO for CPT at the end.
QUOTE]

Thanks for this... so would I have to substitute LHR-JNB-NBO at the end or simply LHR-NBO to get SA pricing? I don't think we'll end up actually flying the last leg, so it can end anywhere really.