Complex sentence: The Brooke Bond factory is at Trafford Park in Manchester but is not to be confused with factory of Gold Crown Foods Ltd, Liverpool which took over production of Brooke Bond Choicest Blend tea, since when it rapidly gave way in supermarket shelf space to Yorkshire Tea.
Split into simpler sentences: The Brooke Bond factory is at Trafford Park in Manchester but is not to be confused with the factory of Gold Crown Foods Ltd, Liverpool, which took over production of Brooke Bond Choicest Blend tea. Since then, Brooke Bond rapidly gave way in supermarket shelf space to Yorkshire Tea.