I guess no one else has seen that Airways have been increasing their airways charges by around 80% per year over the last three years?
From the Airways website:
Airline prices
The final overall price increase is 10.6% in 2013-14, 3.5% in 2014-15 and 1.2% in 2015-16. This is an increase of just over 5% a year, or 15.7% over the three years.
As a consequence of the high quality of customer submissions, we have revised Airways’ price increase from the 23% proposed in February to 15.7% over the three years of the pricing period.
In addition, prior to these increases, there were no increases for the previous 11 years.