Heathrow Airways
BA had the perfect opportunity to do what LH has done when they owned Go Fly.
GO offered a reasonable standard product, and could have been deployed at airports like Birmingham, Bristol, Manchester, Newcastle, Glasgow and Edinburgh to offer point to point services to leisure and business destinations in Europe, using effectively a 3-class config.
BA unfortunately cannot see further than the end of 28L, and the result is that a UK owned airline has abdicated business from outside London to European and Middle Eastern carriers - much in the way that UK manufacturing has largely been outsourced to China and India.
The result is the economy we are enduring today.