Just a thought, will it be a good business idea to start a courier service between certain cities in Poland & UK? To start with few cities in both countries, collecting from UK then deliver to destinations in Poland & vice versa.
Can you compete with the established cargo carriers in terms of speed? Probably not.
Can you compete in terms of price? Probably not.
Now, a Russia-UK service on a regular timetable might just be worthwhile. If you could offer something like -
6am Wednesday - London
10am Wednesday- Dover (110km-ish from London, 4 hours to keep to schedule)
8am Thursday- Berlin (1000km-ish from Dover, 22 hours max)
4pm Thursday- Warsaw (600km-ish from Berlin, 8 hours max)
2pm Friday - Minsk (600km-ish from Warsaw, 22 hours max)
9am Saturday - Moscow (700km-ish from Moscow, 19 hours max)
8pm Saturday- Minsk (11 hours)
6am Monday- Warsaw (46 hours)
4pm Monday - Berlin (8 hours)
6am Wednesday- London (38 hours)
This could work, particularly as Russian and Belarussian delivery services aren't particularly reliable. If you teamed up with couriers in each city, you might find that people are quite willing to pay up for a door-to-door service that runs to a schedule as opposed to the whims of couriers.
It would be hard work, but it could be very successful. It won't work just going UK-Poland, the market is saturated and people are willing to work for less than you.