Rearranging the letters of 'The Department of Social Security' gives:
It's the Real McCoy of Red Tape units
(by anon by hand) (1980)
Other related anagrams without their own page:
"The Department of Health and Social Security" -> "The socially hard-up can need it from the state 3, 10, 2, 6, 3, 6, 8" (by Ken Boyle by hand) (1977) (pending approval)
"The Social Work Department" -> "Team-centred hospital work." (by Rick Rothstein using Anagram Genius) (2006) (pending approval)