Hi Pipkin73. The accounts for Otium and SBS&L are freely available from companies house
https://beta.companieshouse.gov.uk/ just need to search the company names
Investment in SBS&L was originally made through private equity funds that SISU are managing partner/agent for. Ownership was then transferred to Sconset Capital LLP which is another private equity fund that SISU are managing partner for.
details of how private equity funds operate are here and makes interesting reading
https://investorjunkie.com/24844/private-equity-funds-work/
None of that stops SISU being a hedge fund that controls private equity funds by being a managing partner. Description of activities from SISU Capital financials
View attachment 5540
details of how a hedge fund operates are here to compare
http://www.investopedia.com/articles/02/111302.asp
Hope that helps but I doubt the guy will really be interested and SISU wont leave until they are good and ready imo. When that will be your guess is as good as mine