In many respects I find HEL to be the efficient and aesthetically pleasing experience promoted by several other posters here in Skytrax. (I have still yet to see more efficient luggage handling and security arrangements anywhere else.) However the increasing passenger numbers at this airport have started to affect the convenience that I have been taking for granted for the past few years. The international (Schengen) shopping arcade is frequently very crowded. This is a problem because the shopping arcade is the also the primary transfer route especially from the domestic gates to the non-Shengen international gates. Furthermore the number of domestic and international flights arriving at stands away from the terminal has increased requiring slow bus transfers to and from the terminal. Because of these issues the 45 minute minimum transfer time between domestic and international flights is starting to look too short. Finnair (who also sell their flights to domestic destinations under codeshare agreements to BA among others) should adjust their schedule to make the transfers work more reliably at this increasingly popular airport.