back in the early 1980s myself and about 6 work coleagues working nights in a bakery at crookes in sheffield,we was having a smoke break outside in the van yard where the view overlooked all the way across the valley of sheffield,when one of the lads said whats that,we all looked and way across the other side of the city we saw a very bright light that seemed to be going up and down and from side to side,we all to be honest just stood there laughing at each others comments at what it could be,then after watching it for over 10 mins it suddenly shot off across the valley of sheffield at a very high speed, going out of site behind the houses over walkley before revealing itself once more 3 or 4 sotereys high close to where we worked on school road it was very bright round in shape at 1st then again shot off at high speed seeming to change shape,me and my m8s just looked at each other said wtf and just went back to work rubbing our eyes,also seen other unexplained things in the skies over the years but nothing like the 1 back in the 80s.