With my partner, we had gone to see lyrid meteor shower. we had been there over an hour, in which time we had seen 4 meteors entering earth's atmosphere, 10-15 satellites, one of which was unlike any i had seen before as it was emitting a powerful white light roughly every 4/5 seconds as it slowly passed. after this we were considering leaving as we were both getting cold. i had a green laser pen with me & decided to try flashing it 3 times directly above me. a few minutes after this as i was staring almost directly up i saw a satellite sized light come from the right side of the sky at an incredibly high speed, exiting to the left. as it crossed the clear night sky it was performing a number of 90 degree turns all while maintaining its astounding velocity. i managed to point the laser pen in its direction at which point my partner also saw it too. this all lasted approx 5-6 seconds.