VATF36320 | What to consider prior to determining whether to use an intervention: matters to consider when looking at particular types of taxable person or activity: conduit traders: what is a 'conduit trader'?
From HM Revenue & Customs · VAT Fraud
A conduit trader is a UK trader that partakes in a transaction that is connected with the fraudulent evasion of VAT outside the UK.
The following types of traders might be acting as conduit traders:
acquirers (pre EU exit),
buffers,
exporters,
traders making supplies between OMSs, and
box consolidators (VATF36200).