IFM12154 | Offshore Funds: Overview of the offshore fund rules: umbrella funds
From HM Revenue & Customs · Investment Funds Manual
‘Umbrella funds’ means arrangements which provide for separate pooling of the contributions of the participants and the profits or income out of which payments are made to them. References to a part of umbrella funds are to the arrangements relating to a separate pool (or ‘sub-fund’). See IFM12260 for details of how umbrella funds are treated in relation to the definition of an offshore fund.
For the purposes of the detailed rules set out in The Offshore Funds (Tax) Regulations where there are umbrella arrangements:
any reference to the assets of an offshore fund or the income arising on those assets is a reference to the part of the assets of the main arrangements that relates to a particular separate pool (sub-fund); and
any reference to participants in an offshore fund is to investors owning an interest in a particular separate pool (sub-fund).