Hi Cram C,
The guidance at
CG57701 states “If a unit holder switches out of one continuing sub-fund into another, there is a disposal for CGT purposes. This is on the basis that the unit holder disposes of an interest in one company and replaces it with an interest in another. But if one sub-fund disappears on being merged with another, rollover treatment under
TCGA92/S136 (company reconstruction or amalgamation involving the issue of securities) may be available
Guidance on company reconstructions and amalgamations can be found at
CG52700 - Company reconstructions: shareholder: introduction. The basic idea behind schemes of reconstruction is that where the original shareholders keep an interest in the original business then, subject to conditions, they will not be treated as having disposed of their original shares.
The qualifying conditions for S136 TCGA 1992 to apply are covered at
CG52701 and there is a relevant example at
CG52726 (Investment trust & unit trust reconstructions).
Thank you,