IFM09820 - Other tax issues: Stamp duty on shares
To a large extent, the STS treatment for RIFs mirrors that for co-ownership authorised contractual schemes (CoACS), and Chapter 1 of Part 3 of the Regulations mainly amends the existing legislation in Finance Act 1986 and Finance Act 1999 so that it also applies to RIFs.
Information on STS can be found in the HMRC Stamp Taxes on Shares Manual (STSM101320).