On june the 14th, at around 22:00, i was driving through ticknall when i noticed an odd light in the sky in the direction of the reservoir. i drove to a nearby lay-by and parked my car. there was a public footpath that leads to the reservoir so i started walking down the path to see if i could get a better line of sight. about 100 metres down the path i spotted the light again. it was still hovering above foremark reservoir at this point. it appeared to be about the size of a golf ball, although i believe it was bigger than that, and was glowing orange/white. almost like the flame of a candle. as i got closer, four smaller lights dropped out of the bottom of the main, big light and began to fly in separate directions into the woodland. i got my phone out and started recording. as i did, my phone came up with an error message stating that it was overheating and had to shut down. the video started to flicker red/pink and then my phone turned off. i watched the object for about 2 minutes before it started to move. it flew slowly over the trees to the west of my position and then descended. i could see the light emitted from the object shining through the trees. i went back to my car and drove around to the area where the object had descended. this took around 6 minutes. when i got there, there was no light source at all and the object seemed to have disappeared.