Just a few comments about the BA NCL - HRW route.
Until summer 2005 BA regularly operated 7 daily flights in the winter and reduced to 6 for the summer when the Heathrow slots could be more profitably utilised.
This year it could be that, with a further route to London (Eastern 4 x daily to London City) aimed at the business market, BA felt that a reduction in frequency was in order.