A clean start is what's needed here. Impossible at any existing airline, especially BA. A certain low-fare airline took a long look at one of it's local rivals recently with a view to a merger.....the result? No way! Working practices and agreements with suppliers and unions would have dragged down the whole operation. As for operating "low-fare" out of LHR and LGW, I don't think so. The low cost carriers need higher than average utilisation of their resources, sitting at a remote holding stand for 20 minutes awaiting a take off slot is not the way to achieve it, or is operating sectors in excess of 2 hours imho.