steering feels heavier than it used to at low speed

I put this one up for comment a while ago, but no-one really got too inspired by my problem. Having generally searched the internet for clues/advice seems to come up with: "binding in steering linkage", "Steering box or rack" up the creek, or even just "wheels out of alignment" - guess I should just drive to a tyre garage first - but wondered if any of you Micra experts knew what the most likely cause is ? The steering wheel just does not "pull" around smoothly any more - seems to go hard and soft as it is turned, or "heavy then light" as the steering wheel is turned around, - obviously most noticeable at slow speed. Cisco, surely you have come across this before ??
Rod.

Whats it like with the weight off the wheels?

If you have power steering - bleed you fluid and put some fresh stuff in there.

If you don't have power steering - check your tyre pressures and also your tyres themselves. Tyres play a big part in your steering.

Thanks for feedback
This car does not have power steering, - and the problem is getting worse. Probable it is one of the things listed in my initial post, - but feel this is a problem that someone might recognise as one of the "usual suspects". I checked
the tyre pressures soon as noticed the problem, but that's not it.
Rod

It could be just your tyres getting old mate!

I've noticed that problem before on my '97 K11. As soon as I get the tracking done it's fine again, until my fiancee (learner driver) bounces it off a kerb again...

Try getting the tracking set and see if that sorts it out for you