This week I have been noticed about a Monarch Famtrip to Seville last year to show Monarch delegates the city and the region. Additionally in Routes Europe 2012 there were some meetings with Jet2.com to show the benefits of operating UK-SVQ flights. So as I can see, it is not a lack of interest from airport authorities, but from UK airlines (maybe becuse there is not a strong demand to justify direct flights unless RYR would put them).
Regards .-