As someone who has worked for a Van Hire company before, trust me, they’ll want to hear about it. You’ll be doing them a favour too! There’s very possibly damage to the van, no matter how small, that they otherwise wouldn’t know about, and they’ll want fixing.
Their insurance will obviously pay for your new wheel too, and anything else that may have been damaged. And the guy who hired the van will have to cough up the excess of probably £500… Oh, and they will report him to the police (even if you don’t) for leaving the scene of an accident, and he’ll have his collar felt very swiftly.
Remember this… Human beings are inherently lazy people. Police men are human beings. If you go to them with a case with no evidence, only your word against his, and no witness or 3rd party backup, it’s a massive headache for them for no outcome. If you go to them with the backup of the van hire company (which you will get) its a very easy open and shut case for them to prosecute the driver. Police are interested in statistics sadly, not helping people in general. MAKE SURE it’s the van driver that becomes the statistic here, not you…