Ive been doing a bit of research on night shift and looks like there's a few options flying and ice fast train. The best option on price and speed looks via cologne which is also a fantastic city in its own right to visit. Option one fly manchester cologne friday to monday 55 pound return. Intercity to bielefield is 1hr44 but only three stops. Option two fly to dortmund from luton for approx 80 pounds and 44 minutes ice train to bielefield. Option 3 via dusseldorf more flights to chose from etc. Option 4 north sea ferrys and approx 4 hour drive. Hope this helps someone.