The bikes are free and on their way to new homes! Thanks everyone for your advice. In the end I talked the security guy in the basement into showing me his arm long bolt cutters (it was really too easy) I then questioned with big eyes as to whether his big cutters could cut such locks and the prove the point he flexed his muscles and cut them off. Then panicked and ran off shouting behind him 'no one saw me do that right!' justice was done!
The bikes are free and on their way to new homes! Thanks everyone for your advice. In the end I talked the security guy in the basement into showing me his arm long bolt cutters (it was really too easy) I then questioned with big eyes as to whether his big cutters could cut such locks and the prove the point he flexed his muscles and cut them off. Then panicked and ran off shouting behind him 'no one saw me do that right!' justice was done!