As one of the above says, you need to get a copy of the constitution by which the club was set up. Tambo assumes it is a registered charity; that is possible but more likely it is not. Charity status may help, in that the charity commission would have to approve any attempt to change the constitutional arrangements or sell assets.
These clubs are often owned by the members and sometimes there is a trust deed which establishes trustees, whose role is to run the club.
Quite often these clubs have significant assets in the form of land or buildings and land that is very valuable.
You are right to be concerned but until you find what the rules are on changing things, you can't work out how is pulling what strings.