This cylinder type craft was flying in a straight line but it was preforming a circular motion i was standing in a friends back garden when we first noticed the cylinder we realised that' it was not a common plane or any other aircraft. the cylinder object was also very high like a plane would be only it was very visible to see as it was very long in ft i estimate this object would have been up to 20 feet long . wee watched the cylinder object as it flew buy it then gained alltatude and desaperd that was the last time we saw the object.