Overheating

Hey afternoon people. Hope any of you guys can assist me here. My 1.3 used to overheating when im stuck in peak traffic. Thinking that its my waterpump cause the water came out quite slowly where it goes back into the waterbottle, after changing it, it still persists and now im stuck and back at square 1. Oh ya iv got a new radiator fitted.

If i have an airlock, how do i bleed it? Or is there a method that it should be filled to?

Problem solved, my fan switch wasnt connected properly, so i just wiggled it and it came on cooling my car nice and cold