Well, executors and administrators have a duty to "get in" ie realise the estate so one infers that such rights as Bulmer pay PERSONALLY have had, insofar as not divested by operation of law eg those under contracts of personal confidence, ought to be offered for sale.

The rights vested in COMPANIES however are treated differently. A company exists until it is would up or struck off. But if Bulmer held shares then the shares might be put on the market, and if the companies are liquidated then the rights themselves may be put on the market.