cambelt ,Who and when

Hi everybody eventualy making progress with the beast ,just a quick qustion my service book is reading cambelt change at 59500mil in 2005 ,i have 111000miles on the clock ,when should i be looking to have this done and whom by i live in the leeds area so pretty central and how much would i be looking at for belt ,tensioners,water pump, and thermostat,doing could any body point vme in the right direction cheers Nick