Rather bizarrely, it's not possible to fly direct to ANYWHERE in Poland from MAN (why?????) so if necessary, I connect at LHR, but cheaper options exist via Paris, Amsterdam, Frankfurt and Copenhagen. Has anyone any experience of connecting at these airports on the way to Poland from the UK? Which is the best option? Especially with regard to time between connections? Amsterdam Schipol sounds enormous, so I really can't see how 1 hour between flights is enough (whereas at LHR T5, it probably would be, if flying both legs with BA).
Is Copenhagen via SAS? If so, I'd avoid them - SAS are going downhill rapidly and have been prone to sending people on bizzare routings due to cancelled flights from Poland.
I'd recommend going via Frankfurt for a reliable connection - and I think Frankfurt offers both Lufthansa and LOT which plays in your favour, especially as LOT and Lufthansa are part of the same alliance, so if one carrier lets you down, the other should see you okay.