Tunisair seem to do quite a few charters to Europe compared to the UK. If you look at the schedules for Frankfurt as an example, there are flights to Tunis, Monastir, Djerba, Sfax etc and this is the same in most parts of continental Europe. However, the UK only has flights from Tunis to Heathrow, I suppose though that Nouvelair takes up that most of the charter work.
Nice pictures anyway.