HC Deb 25 October 1955 vol 545 c19
33. Sir C. Taylor

asked the Minister of Labour in how many, and in which, industries the principle of working to rule is at present in operation.

Mr. Watkinson

I regret that this information is not available.

The phrase "working to rule" is not sufficiently precise, as indicating any particular method of operating working rules, to allow of information regarding instances being systematically collected.