"That diminution of light and air which the law recognises as the ground of an action against a party who builds near another's premises is such as really makes them to a sensible degree less fit for the purposes of business or occupation."
"The question, therefore, which I shall leave to you is whether the effect of the defendant's building is to diminish the light and air so as sensibly to affect the occupation of the plaintiff's premises and make them less fit for occupation."
"It is, I think, the result of the evidence that it has ordinarily, if not always, been the practice to make use of the electric light in the back part of the room, and a most extraordinary amount of light from the windows in Worship Street would be required to enable the use of the electric light in the back part of the room to be dispensed with, even on ordinary days. Practically, I think it may be taken that the use of electric light or some other artificial light is now and must always be necessary in order to light the back part of the room, even in the daytime. There is no evidence to shew that such an extraordinary amount of light has been enjoyed or acquired for anything like the period of twenty years. Probably the ground-floor rooms were reconstructed or rearranged as they now are within quite a recent period."
"As to the question whether the plaintiffs' messuage is an ancient building so as to entitle them to the right of the lights, and whether the plaintiffs' lights will be darkened, I will not determine it here, for if it clearly appeared that what the defendants are doing is what the law considers as a nuisance, I would put it in a way to be tried. … But I am of opinion that it is not a nuisance contrary to law, for it is not sufficient to say it will alter the plaintiffs' lights, for then no vacant piece of ground could be built on in the City, and here there will be seventeen feet distance, and the law says it must be so near as to be a nuisance. It is true the value of the plaintiffs' house may be reduced by rendering the prospect less pleasant, but that is no reason to hinder a man from building on his own ground."
"Whether the obstruction is such as to deprive the party of such a supply of light as he might reasonably calculate on enjoying."
"But I cannot think that this is such an obstruction of light as to amount to a nuisance. … What the plaintiff is bound to shew is that the buildings cause such an obstruction of light as to interfere with the ordinary occupations of life."
"The right conferred by the statute is an absolutely indefeasible right to the enjoyment of the light without reference to the purposes for which it has been used."