Looks like there's going to be further increases to UK routes in Winter 2016/17 based on the next batch of schedule releases:
New Winter routes:
Birmingham to Madrid
East Midlands to Barcelona
Glasgow PIK to Barcelona
Frequency increases (compared to this winter):
Birmingham to Barcelona - 5x weekly to daily
Edinburgh to Barcelona - 3x to 5x weekly
Glasgow Intl to Berlin SXF - 3x to 6x weekly
Manchester to Barcelona - 7x to 9x weekly