Notwithstanding anything contained in this Schedule, there shall not be included in the activities of the engineering industry:—
(a) the activities of any establishment engaged wholly or mainly in the activities following, or any of them, that is to say—
(i) the processing of plastics material;
(ii) the manufacture or repair of any of the following articles or any article similar thereto, that is to say, artificial flowers or teeth, ball-point or fountain pens, belts, braces, brooms, brushes, clothing, document cases or covers, eye-glasses, footwear, handbags, jewellery, jewel cases, lampshades, pencils, purses, spectacles, straps, suitcases, toys and games or wallets;
(iii) the manufacture of paint;
(iv) the production of iron or steel by any process or, when carried out in association with such production, the casting of iron or steel by any process, the production of any iron or steel forgings or the annealing or heat treatment of steel;
(v) the rolling with or without heat of iron or steel products for the purpose of reducing the cross-sectional area thereof;
(vi) the production from iron or steel of bright bars, hot finished tubes or hot finished pipes;
(vii) the production of tinplate, terneplate, iron or steel wire, or steel wire ropes;
(viii) the production of galvanised or other coated steel sheets when carried out in association with any of the activities included in heads (iv) to (vii) of this sub-paragraph;
(ix) electro-typing, stereo-typing, typesetting, typecasting, or the preparation of lithographic plates or engraving for the purpose of printing;
(x) operations carried out at or from a yard or dry dock (including the precincts thereof) or a harbour or wet dock in the construction, reconstruction, repair, refitting, painting or finishing of ships or vessels or other floating constructions;
(xi) the provision or continued provision for a building or any civil engineering work of water, gas, electricity, lighting, heating or ventilation, being operations undertaken in, upon, above or under the building, or the close, curtilage or precincts thereof, or the civil engineering work or the site of a building or such a work;
(xii) the repair of mechanically propelled vehicles used on roads not being activities carried out by the London Transport Board;
(xiii) the repair of aircraft or helicopters by a person other than the manufacturer thereof;
(xiv) the activities mentioned in paragraph 1(b) when carried out by the National Coal Board;
(xv) the provision by a local authority of a road transport passenger service; or
(xvi) the installation of metal windows;
(b) the activities of—
(i) the United Kingdom Atomic Energy Authority at any establishment engaged wholly or mainly in the production, use or disposal of atomic energy or radioactive substances, or in the production, development or testing of nuclear weapon components, or in research into any matters connected therewith;
(ii) the Electricity Council, the Central Electricity Generating Board or an Area Electricity Board;
(iii) the North of Scotland Hydro-Electric Board or the South of Scotland Electricity Board;
(iv) the Gas Council or an Area Gas Board;
(v) a harbour authority within the meaning of the Harbours Act 1964 when acting in that capacity;
(vi) a statutory water undertaker within the meaning of the Water Act 1945 (other than Part II of that Act) or a local water authority within the meaning of the Water (Scotland) Act 1946 being the activities of such undertaker or authority in the exercise of its powers or duties as such;
(c) the activities of any establishment (not being that of a local authority or of the London Transport Board) engaged mainly in one or more activities not included in paragraph 1 of this Schedule;
(d) the activities included in paragraph 1(h) of this Schedule when carried out by a local authority;
(e) the supply of food or drink for immediate consumption;
(f) the activities of any company, association or body that is required by its constitution to apply its profits, if any, or other income in promoting its objects and is prohibited thereby from paying any dividend to its members, and that has for its sole or principal object or among its principal objects the provision of facilities for any of the purposes mentioned in section 15(1) of the Disabled Persons (Employment) Act 1944 (which relates to the provision for registered persons who are seriously disabled of employment or work on their own account under special conditions and of training for such employment or work); or
(g) the activities of any local authority in the provision of sheltered employment carried on in accordance with arrangements under section 3 of the Disabled Persons (Employment) Act 1958, or under section 29 of the National Assistance Act 1948 as extended by section 8(2) of the Mental Health Act 1959 and section 8(2) of the Mental Health (Scotland) Act 1960, or under section 31 of the National Assistance Act 1948 (as substituted by the National Assistance Act 1948 (Amendment) Act 1962, or under section 28 of the National Health Service Act 1946 as extended by section 6 of the Mental Health Act 1959, or under section 27 of the National Health Service (Scotland) Act 1947 as extended by section 7 of the Mental Health (Scotland) Act 1960.