Shares or securities, whether quoted or unquoted, of a company
which gave the deceased control of the company immediately before
his death are qualifying property for instalments.
"Control" is defined by IHTA84/S269. The definition was considered in the High Court in Walding and others v IRC  STC 13, and the effect of a casting vote was considered in Walker, Fanny (deceased, executors of) v IRC (2001) SpC 275.
SAV will advise whether a holding qualifies for instalments under IHTA84/S228 (1)(a).