IFM12150 | Offshore Funds: Overview of the offshore fund rules: overview of transitional arrangements
From HM Revenue & Customs · Investment Funds Manual
Offshore funds in existence prior to the introduction of the current rules on 1 December 2009 are now either reporting or non-reporting funds.
Transitional rules apply to UK investors who retain investments in offshore funds which they have held since prior to 1 December 2009 – see regulation 43 of SI 2009/3001, explained at IFM13560.