search dread. You can get a link on either dark.fail, or tor.taxi. Pretty much every drug has a subdread and people leave much better reviews there compared to the markets and some even have proper purity testing done. Can also ask on there but obv don't mention why you want it or more info than "Want good xxxxx UK to UK". From what we have stumbled across, the UK drug scene got screwed up really badly by brexit. The Netherlands happen to be one of the world's largest suppliers of most recreational drugs that aren't tied to cartels, or Ketamine (especially stuff like MDMA that they supply almost all of), and brexit made importation easily 1000x riskier due to not having the EU open border policy anymore and having to deal with customs and searches crossing borders. Also, there is a global supply issue with H. Almost no-one has or can get good high purity H anymore. Quite simply, supply is almost non-existent and goes fast to all the people addicted to that awful drug. A few sellers have what is mentioned as decent H, but none have the stuff that used to float around for pocket change. You can look at 'china white' which is usually F and analogues now. Even that varies greatly even from batch to batch from the same supplier. Sorry, the UK's drug scene is awful now. Almost everything domestic there is cut to hell. Ordering from NL is almost a guarantee the package gets checked, so don't even consider it. UK customs also seem to be some of the strictest in the world (right behind australia) considering not even SN can reliably get through anymore.