"Parts of JNB are safer than parts of many UK cities"...?????!!!!
Which parts? The parts that are behind barbed wire with 'armed-response' alarms?? No barbed wire with 'armed-response' alarms in UK cities!!!
You comparison with Cape Town is fairly accurate: It came above Jo'burg in a recent "world's most dangerous cities" report. (NO UK cities were listed in that report!)
Is SAA scaling down their LHR operations because their crew get arrested more often there than elsewhere?