Looking at TCX schedules for next summer. I think they could be about to announce a few new destinations from Manchester. One of them, new Djerba flight on Sunday operated by TCX:
Depart:
Manchester
11 May 2014 at 06:00 hrs
TCX 2402
Arrive:
Djerba
11 May 2014 at 09:30 hrs
Depart:
Djerba
18 May 2014 at 10:30 hrs
TCX 2403
Arrive:
Manchester
18 May 2014 at 14:20 hrs
They also have a new Wednesday flight to Mytilene operated also by TCX.
There is certainly room for further expansion and routes.