They made a point of breaking into the South African route and then to CPT. Whilst they were only seasonal, the route can certainly - now - take a full daily service. Just look at BA from LHR + LGW and also Thomas Cook from LGW (I think they are x3 a week to CPT but may be seasonal). Since SAA also gave up LHR-CPT, BA have the run of the place for directs.