two triangular shape "arms" could be seen coming from the centre of bright orange/yellow flashing/flickering lights,with backlighting of blue colour,the main body of it appeared to be light grey in colour,similar to brushed steel maybe ?In terms of size it was probably the size of the roof of a average house.

It made small swift movements as if jigging around then hovered silently with all lights blazing, then it dimmed the orange lights,leaving just backlighting of blue,then down to just small red light and glided smoothly off, and was then replaced with another exactly the same which was waiting further back with lights dimmed,this one then followed the same pattern of behaviour as the first and then moved off in a similar way whilst the first one was still vaguely in sight.

I have never seen anything on this earth that could possibly explain what i saw last night,I woke my nephew joseph(age 18) and he witnessed it as well,It was close by and very plain to see,there was no noise acompanying either of these craft and they were both easily visible for quite a long time,long enough to know exactly what I saw.