All the three Red wires connect together and to nothing else - you do not connect the light to these wires.
The Switched Live (Black with a Red Sleeve) is the supply to the lamp that can be turned on and off - You connect the lamp (Brown) and nothing else to this wire.
Two Neutrals and Neutral return form lamp together.
See picture...
http://www.diydoctor.org.uk/project_images/ceilingrose/Untitled-1%20copy.jpg
Peccavi
March 2009