Clunking noise at the back - drive moves a lot

[Ireland]

A sort of clunking noise has developed at the back of the car during the week.

When I lift off the power and then accelerate again (in traffic, etc) at anything above about 30MPH it happens.

I pulled it over the pit today and can't find anything major wrong but I did notice that the drive on the RHS of the car moves in and out a lot more than the other one.

To clarify I can move the RHS drive about 30mm towards the hub or the diff.

When I move it there is a sound that could be what I'm hearing when I'm driving.

There is very little movement on the LHS one.

Is this normal?

I will be taking the drive out soon enough as there is a crack appearing in the drive boot so I can replace it easily enough then if necessary.

[Spawn]

Mine had quite a clunk when I let off the power. Turned out to be the Top Mount Bracket for the diff. I had snapped mine but from reading around they can work loose so worth a check?

My drive shafts are the same.. one moves more than the other. Not sure whether this is a major issue or not..

[Ireland]

I think I'll just order a set of drive boots for both sides on Tuesday and do them and get it over with.

I had a look at all the mounts and they seemed to be ok.

That's what put me searching elsewhere for the cause of the noise.