"This (and a longstanding openskies arrangement) has allowed KLM to link 20+ UK airports to Schiphol, and clean up! That's convenience"
Frank - most of the UK airports that link to Schipol are a bugger to get to locally - try Leeds for example - and you have to allow 45-60 minutes to egtthere
Newquay could be linked to LHR but the demand is just not there - same as Dundee, Sheffield, Doncaster, Teeside etc etc