right then, a quick run down on your front suspension
top arms - squeak, lots! typically in cold damp weather when going over bumps you will notice a nice high pitched squeak like an old door, thats your top arms making a fuss! usually they've just got dry and need a bit of attention, at worst they've worn out but they're only about £20 a side to replace. my advice would be to get yourself a set of cleaning brushes, like toothbrushes, and stip them down. spray them down with WD40 and scrub up the bushes on each side, both sides (there is two pivot points one each arm). once you've done that and they rotate nice and freely you can check for play in them and if all is well, grease the living hell out of them and put them all back together. again grease both sides, each side. that should see you right for another winter probably.
bottom arms - they tend to make a rumble / knocking noise slightly more holo-metalic rattle. if they are making noise its because the bushes are worn out nothing else, so they will need replacing.
anti-roll bar - they make the same sort of noise as the bottom arms so it can be hard to tell, but you often feel a knocking in your feet if that starts to go. another trick is to grab hold of one end of the arb and try to push and pull the bar, if it moves from side to side the bushes on the bar are worn and need replacing. you can replace the bushes on their own but really you need to replace the entire bar and the metal does wear as well so new bushes are never as tight. the other part of the ARB setup however is the drop links or anti roll bar links. these are evil little things that can make one hell of a racket for such a small peice and are not always felt under foot like the ARB itself. they are so cheap and don't last long at all so if I ever do any suspension work I replace them anyway, its the sort of peice that if you ever undo it you dont put the old one back on and you have to undo it to remove either top or bottom arms anyway. they are only about £10 a peice.
hope that helps!