"an organisation (whether temporary or permanent) - (a) which consists wholly or mainly of workers of one or more descriptions and whose principal purposes include the regulation of relations between workers of that description or those descriptions and employers or employers' associations; or
"6 - (1) A trade union whose name is entered on the list of trade unions may apply to the Certification Officer for a certificate that it is independent.
"S.7 - (1) The certification Officer may withdraw a trade union's certificate of independence if he is of the opinion that the union is no longer independent.
"S.8 - (1) A certification of independence which is in force is conclusive evidence for all purposes that a trade union is independent; and a refusal, withdrawal or cancellation of a certificate of independence, entered on the record, is conclusive evidence for all purposes that a trade union is not independent.
"4.As regards Her Majesty's Home Civil Service - (a) the Minister of the Civil Service may from time to time make regulations or give instructions - (i)relating to the selection and recruitment of persons to situations in the grades listed in Parts 1, 2 and 3 of the Schedule to this Order (including, in particular, regulations or instructions prescribing the qualifications for appointment to such situations and providing for such appointments being made on merit by means of open competitions, subject only to such exceptions as may be specified);
"a. that it had become essential to except staff from the provisions of certain employment legislation on the grounds of national security;
"Our ultimate success depends upon the extent to which revenue collection is upset, defence readiness hampered, and trading relations disrupted by this and future action."
"Walk-outs in key installations have affected Britain's defence capability in general, and crippled the UK contribution to the NATO exercise 'Wintex'."
"another vital part of the Government's Composite Signals Organisation ... is to be hit by a strike from Friday, 3 April."
"48-hour walk-outs have severely hit secret monitoring stations belonging to the Composite Signals Organisation. The Government is clearly worried and will be subject to huge pressure from NATO allies."
"Defence plans have been upset by the continuing action at naval supplies depots, dock-yards, and other crucial establishments."
"5. The Staff Association will be established permanently to represent all members of GCHQ and (industrial and non-industrial), but will be able (if staff wish) to have separate sections for the different disciplines - for example Radio, Science and Technology, Administration and Support. Its constitution will be for staff to propose, but must be acceptable to the Director (the main provisos will be no external membership or affiliation) so as to ensure that it will not come under outside influence. All GCHQ staff will be able to be members. People experienced in Whitley and Industrial trade union affairs have already been invited to help in forming the Association, but all members of GCHQ will be eligible for office...."
"2.Subject to the overriding objective of maintaining effective operations at GCHQ at all times, the aims and objectives of this agreement are: ..."
"... To be independent the trade union must be one which "is not liable to interference by an employer ...tending towards such control."
"I agree that there are two possible meanings of the word "liable." It is a very vague and indefinite word. Having heard very good arguments on both sides, it seems to me that the Certification Officer's interpretation of "liable" is correct and the staff association's interpretation is not correct. One has to envisage the possibility that there may be a difference of opinion in the future between the employers and the staff association. It does not matter whether it is likely or not - it may be completely unlikely - but one has to envisage the possibility of a difference of opinion. It may be on the amount of pay; it may be on the question of a pension; it may be on the safeguards; and the like. Whatever it may be, there may be a difference of opinion. It may be a mere possibility. But when it arises, the questions have to be asked. What is the strength of the employers? What facilities could they withdraw? Section 30(1) of the Act of 1974 contemplates that the association may be liable to interference arising out of "the provision of financial or material support or by any other means whatsoever.""
" The phrase "liable to" when used otherwise than in relation to legal obligations has an ordinary and well-understood meaning, namely, "subject to the possibility of." Counsel for the association has in fact contended that it means "subject to the likelihood of." Upon this basis, so the argument goes, the good relations which have long subsisted between the association and the employers belied the likelihood of the employers seeking to interfere with the affairs of the union so as to tend towards control of it; and the Certification Officer failed to pay due regard to the harmonious future which was suggested by the evidence of past goodwill."
"... Is the association exposed to risk of interference by the employers tending towards control of such association? If the answer to that question is "Yes," then the association is not an independent trade union. The degree of risk concerned is irrelevant so long as it is not insignificant or de minimis."
"... The sole question, as I read that part of the definition, is whether vulnerability to the relevant kind of interference exists or not. If it does, then the union or staff association concerned is not independent. The further question whether it is likely or not unlikely that the employers will exploit such vulnerability is not relevant."
"... The Unions were in fact frankly glad to have found what they regarded as a soft underbelly which they could attack."