Compact step recommendations for rear of PVC

I have one of those cheap folding plastic steps from my VW days but want something a bit more substantial but at the same time compact.
What do you PVC owners use?

jennyandpeter wrote:You can step on the bumper, we have never needed a step.

Sorry, I should have been a bit more clear with my question.

With a PVC that fully opens up at the back then I completely agree that stepping on the bumper would be fine. 
I have a Symbol and tend to open just one door to exit/enter if I need to exit at the back. Using the bumper as a step means you have to grab hold of something inside and that is going to cause damage eventually hence the step question.

Thanks Ian but no towbar I’m afraid

Bev wrote:We have a small van too- we bought a metal folding step from Brownhills £20 - very pleased with it.

Just the sort of money I’m looking to spend. Don’t suppose you have a picture/link?
There are plenty of folding steps out there but most have dubious reviews hence the question on here from people with experience of one.

Looks good, thanks Heanorboy

Just thought I would post my purchase.
I was very tempted by the metal step recommended by Heanorboy and Bev but was a bit worried that I would bash something and cause some damage to the van (we tend to move around and would frequently be chucking the step in the back of the van).
With this in mind I went with a better quality folding plastic step, it locks solidly in place unlike the old cheap one and first impressions are good.
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