At the risk of...
you lot,
I have seen objects like this in Sheffield before, one arrived, and was swiftly met by two other 'teams' in triangle formation, 2 teams of three, they lined up around the first one, the hung for a moment, then all sped off in the same direction, with the original object left where it first appeared.
this then followed a similar course, albeit much slower. then simply disapered halfway to the horizon.
This was witnessed by three or four people, and we haven't told anyone before, surley to be lambasted as imagining it, etc. from what i saw, they were small, featurless and brilliantly reflective chrome spheres. they did not waiver in the sky, and most deffinatley had controlled vectors.
birds my fucking anus.