"For a large part of this century there have been many categories of tenancy of property occupied for agricultural, residential and commercial purposes where the legislature has intervened to confer upon tenants extra-contractual rights entitling them to continue in occupation without the consent of the landlord, either after the expiry of a contractual lease for a fixed term or after notice to quit given by the landlord to determine a contractual periodic tenancy. It is primarily in relation to joint tenancies in these categories that the question whether or not notice to quit given by one of the joint tenants can determine the tenancy is of practical importance, particularly where, as in the instant case, the effect of the determination will be to deprive the other joint tenant of statutory protection. This may appear an untoward result and may consequently provoke a certain reluctance to hold that the law can permit one of two joint tenants unilaterally to deprive his co-tenant of 'rights' which both are equally entitled to enjoy. But the statutory consequences are in truth of no relevance to the question which your Lordships have to decide. That question is whether, at common law, a contractual periodic tenancy granted to two or more joint tenants is incapable of termination by a tenant's notice to quit unless it is served with the concurrence of all the joint tenants. That is the proposition which the appellant must establish in order to succeed. "
"Hence, from the earliest times a yearly tenancy has been an estate which continued only so long as it was the will of both parties that it should continue, albeit that either party could only signify his unwillingness that the tenancy should continue beyond the end of any year by giving the appropriate advance notice to that effect. Applying this principle to the case of a yearly tenancy where either the lessor's or the lessee's interest is held jointly by two or more parties, logic seems to me to dictate the conclusion that the will of all the joint parties is necessary to the continuance of the interest."
"Finally, it is said that all positive dealing with a joint tenancy require the concurrence of all joint tenants if they are to be effective. Thus, a single joint tenant cannot exercise a break clause in a lease, surrender the term, make a disclaimer, exercise an option to renew the term or apply for relief from forfeiture. All these positive acts which joint tenants must concur in performing are said to afford analogies with the service of notice to determine a periodic tenancy which is likewise a positive act. But this is to confuse the form with the substance. The action of giving notice to determine a periodic tenancy is in form positive; but both on authority and on the principle so aptly summed up in the pithy Scottish phrase 'tacit relocation' the substance of the matter is that it is by his omission to give notice of termination that each party signifies the necessary positive assent to the extension of the term for a further period."
"That [the wife] be forbidden . . . from: 1. To use or threaten to use violence upon the applicant. 2. To harass threaten pester or otherwise interfere with the Applicant; (3) To leave and not return to the former matrimonial home situate and known as 5 Waghorn Road, Kenton, Harrow, Middlesex; (4) To remove or attempt to remove the children of the family from the day to day care of the applicant or attempt to remove from the jurisdiction," and concluded with the words: "
"If the court has taken into its hands the conduct of the matter to the extent of ordering the interim preservation in the interest of the plaintiff so that the issue between him and the defendant can be properly and fairly tried, it has to be accepted that that is what the court had determined that the interests of justice required. The gratuitous intervention of a third party intended to result in that purpose being frustrated and the outcome of the trial prejudiced, must manifestly interfere with and obstruct what the court has determined to be the interests of justice. Those interests are not dependent upon the scope of the order."