I was just about to ask "why the heck don't you just park the car" but then realized that one hour of parking at LCY costs 6.50 GBP
so I will just
On a more seroius note, given the recent success of the "from website survey to real life route" principle, HEL and BCN are being surveyed as possible future destination on the airport's website. I would guess that LCY-HEL is quite a stretch with the Avros (with props incl. the Q400 being completely out of question).
As we are just at it, does SAS still use the Q400 on the CPH route and if so, what has happened since the landing dramas at AAL and VNO? Just imagine the AAL would have happened at LCY - the aircraft would have ended in the water veering off the runway to the right.