Ta man, this is the one i was thinking about.
http://www.ebay.co.uk/itm/Beyerdynamic-DT880-Pro-Over-the-Ear-Headphones-Ships-from-UK-UK-Seller-/251248220144?pt=UK_AudioVisualElectronics_HomeAudioHiFi_Headphones&hash=item3a7f8f97f0#ht_576wt_1172
(£180 on ebay).
But what does OPEN and SEMI OPEN mean please ??