Complex sentence: The commitee was originally, established as an independent body under the auspices of the Council of Industrial Design, a new Post Office appointed committee was set up in 1968 and today the SAC advises United Kingdom's Royal Mail on their stamp issuing policy.
Split into simpler sentences: The commitee was originally, established as an independent body under the auspices of the Council of Industrial Design. In 1968 new Post Office appointed committee was set up and today the SAC advises United Kingdom's Royal Mail on their stamp issuing policy.