A Flybe de Havilland Dash 8-400, registration G-JECH performing flight BE-106 from Amsterdam (Netherlands) to Birmingham,EN (UK), was climbing out of Amsterdam's runway 36L when the crew stopped the climb at FL080 reporting a technical problem, they could not pressurize the cabin. The aircraft returned to Amsterdam for a safe landing on runway 36C about 25 minutes after departure. The flight was cancelled, the passengers were rebooked onto the next flights. The occurrence aircraft is still on the ground in Amsterdam about 8 hours after landing.