1)
Ryanair from Stansted to Gdansk, Bus, train to Pruszcz Gdański (or a lift) Pick up and pay access baggage.
2)
Contact near Pruszcz Gdański puts it on the coach from Gdansk to Victoria
3)
Postage is expensive, shipping is cheaper but takes 6 - 8 weeks.
3)
Plenty of transport from Poland and back, only last wek an empty one was driving from Lodz to Scotland and looking for anything to be picked up.
4)
Drive over, Takes about 20 hours 1 way with a few breaks.
Biggest problem will be how to pay, Paypal is very new to Poland, most use bank transfer. (Watch who you give your details to).