It’s an interesting question isn’t it. In the UK we’re used to things being relatively cut and dried when it comes to VAT. There is the prevailing rate (currently 20%), zero rated VAT, (0%), VAT exempt (equally 0% but needs to be identified differently to Zero rated) and then the odd few idiosyncrasies such as energy at 5%. But by and large, the overwhelming majority of transactions will be either standard rate, 20%, or zero rated, 0%. That is unless you deal with someone like Amazon, who, it would appear, have been able to agree some of their own rates with HMRC.