The Corries’ version from, I would guess, around 1980, updated with appropriate graphics.

I like this version from Steeleye Span (1973):

Thanks to Leg-iron for reminding me of Steeleye Span! (final link on post)

Cranmer has a great post today comparing the socialists who infest the civil service to cockroaches. The Times, he writes, reveals that Whitehall employs dozens of union officials costing between £150,000 and £4.5 million per department.
Cranmer continues,
When one considers the problems which certain unions may present an incoming Conservative administration, this revelation is of immense [...]