here in the states DJs on commercial radio stations don't have much choice about what gets played and what doesn't. they're handed a playlist by the MD and that's that. usually it's about demographics, what the record companies are willing to give the stations, etc. american radio stations are generally looking for music that fits their niche and captures their demgraphic. i don't think new order really fits any demographic, which is why i only hear the band on the local '80s station every once in a while.
when i was the MD of my college radio station i had a difficult time explaining to companies that we were entirely freeform and thus i had no influence on what other DJs played. i was offered free tickets, CDs, etc. if i got their bands on the air and record companies threatened to withhold material if we didn't play their bands. we lost some business that way, but there's not much one can do and none of us really cared anyway. EMI even invited the MDs of the local NYC area college stations to come to their manhattan headquarters to watch rough cuts of new videos and get our input. they plied us with lots of food and free CDs. the only one we all liked was 'scooby snacks' by fun lovin' criminals which went on to become a minor hit.
however, even freeform stations can have pull every once in a while. lauryn hill was a year behind me at college and she brought us a demo of the first fugees album; since she was a fellow student we gave it lots of airplay on the urban music shows and it went to the top of our charts in the CMJ (college music journal) which i had to compile every few weeks and send in to the journal. i'm sure they would have made it big without us, but it's nice to think we had a hand in making the fugees famous!