I heard that it had something to do with the fact that they used to be neighbours. Phil Collins borrowed Roger Taylor's hedge trimmer and Phil never gave it back. After a few weeks Roger asked if he could have his hedge trimmer back and when he got home, he ralised that it was broken. Phil Collins claimed that it was broken when Roger lent it to him and from that day on, things started to get nasty.
Roger kicked Phil's wheelie bin over.
Phil allowed his dogs to shit on Roger's lawn.
Roger smashed a pane of glass in Phil's green-house.
Phil slashed the tyres on Roger's car.
Roger killed the fish in Phil's fish pond.
Phil ran over and killed one of Roger's kids.
Roger burned Phil's house down with his wife and children still inside.
It was at this point that Phil Collins agreed to have the hedge trimmer repaired and they are all friends again.