At law, there is no reason that an adviser is automatically prohibited from accepting this type of role.
There are however a number of rules that need to be understood and complied with, not least of which the duty to avoid a conflict of interest.
Practically however, many financial and risk advisers are prohibited from taking on these roles, unless they are able to obtain the prior written consent of their licensee.
** for the trainspotters, the title today is riffed from the Bob Dylan song ‘Queen Jane Approximately’. Listen hear (sic):