changing to a new light fitting?

I live in a house which is eight years old I have purchased a new light fitment. The old rose had a plate with a block of 3 terminals.the wiring to the terminal is LYellow with a red sleeve,N two wires twisted together one Black one Blue , and a pair of red wires twisted together in the terminal marked loop, the yellow and green Earth terminal is separate.
The terminal in the new light fitting is a block of 4 marked L one marked N and and one marked earth plus one blank.I have tried fitting using the same as from the old,the light bulbs stays on but cannot be switched off at switch I am obviously coing something wrong. can you help please ?