The plaintiff brought an action in contract against the defendant The Home Insurance Company (Home) on a fire insurance policy issued by Home, and also against the Underwriters at Lloyd’s of London (Lloyd’s) on cover notes issued by it on the same property insured by Home. By stipulation, Raymond Wilson Sturge was substituted as defendant for Lloyd’s. In its answer Home alleged that its policy had been cancelled before the date of the loss and that the plaintiff had failed to file with it a sworn statement of the particulars of the loss as required by the policy. Lloyd’s denied liability, largely on the basis of clauses in its two cover notes reading:
“Warranted same terms and conditions as and to follow the settlements of Home Ins. Company and that said Company has at the time of any loss and at the same gross rate at least $5,000 (subject only to reduction by amount of any loss not reinstated) on the identical subject matter and risk and in identically the same proportion on each separate part thereof.
“This Policy is subject without notice to the same con*501ditions, endorsements, assignments and alterations of rates as are or may be assumed in the above-mentioned Company’s Insurance upon which this Policy is based.”
The trial judge made exhaustive and careful findings of fact. From these it appears that the plaintiff bought from one Dubin buildings located at the corner of Tremont and Camden streets in Boston, on which Dubin had obtained the policies of fire insurance which underlie this action. After a lengthy review of evidence bearing on the question, which it is unnecessary to detail here, the trial judge found that the Home policy had not been cancelled,1 but found also that, in view of some question on that point, the plaintiff had secured an additional and third cover note from Lloyd’s. The insured premises were severely damaged by a fire occurring on November 30, 1958. It was not, however, until January 29, 1959, that the plaintiff forwarded to Home a sworn and written proof of loss. Prior to this date Lloyd’s had appointed one Dalton as an adjuster of its liability but Home appointed no one. Payment was made to the plaintiff on the third Lloyd’s policy which did not contain the warranty clause. On March 31, 1959, Home rejected the plaintiff’s claim on the basis that he had not filed his statement in writing “forthwith” as required by the policy. Conformable to that contention the judge ruled that he had failed to comply with his contract and found for Home on each of the three counts of the plaintiff’s declaration.2
1. The plaintiff first argues that the evidence warranted a finding against Home on the basis that Home’s defence of lateness of proof of claim had been waived. The policy which Home issued was a standard form fire insurance policy written in accordance with G. L. c. 175, § 99, requiring the rendering “forthwith” of a statement in writing containing specific information on the loss asserted. Compliance with the requirement was a condition precedent *502to recovery on the policy. Nichols v. Continental Ins. Co. 265 Mass. 509, 511. The burden of pleading and proving either satisfaction of policy obligations or waiver of them by the insurer is on the plaintiff. Hannuniemi v. Carruth, 278 Mass. 230, 232. "Waiver is the intentional relinquishment of a known right.” Niagara Fire Ins. Co. v. Lowell Trucking Corp. 316 Mass. 652, 657, and cases cited. The trial judge found that Home never waived the policy requirement of a written sworn statement. We see nothing in the record to support the plaintiff’s contention that it did.
Nor can the plaintiff rely in the circumstances of this case on G. L. c. 175, § 102.3 He seeks relief from his obligation to file his statement "forthwith” on the ground that an agent for Home appointed an adjuster shortly after the fire. The judge, howevér, found that Home never appointed such an adjuster and that, therefore, no waiver under the statute was established. We conclude that there was no error in the ruling by the judge, based on his findings, that the plaintiff had failed to comply with the policy provision requiring a signed and sworn proof of loss to be rendered "forthwith.” And in view of his findings, notwithstanding the plaintiff’s argument, based on certain requests not given, it is our opinion that this matter is not in any sense to be governed by Bresnick v. Heath, 292 Mass. 293, 298-299. Since, as the judge ruled, the plaintiff was not relieved of the obligation to submit his proof of loss "forthwith,” we are further of opinion that a statement following a sixty day delay is in this situation not in compliance with the policy requirement. The statement should have been sent as soon as "the exercise of reasonable diligence . . . [enabled] the assured to send it.” Parker v. Middlesex Mut. Assur. Co. 179 Mass. 528, 530. Due diligence in the circumstances was a question of law for the trial *503judge. Smith v. Scottish Union & Natl. Ins. Co. 200 Mass. 50, 53. Depot Cafe Inc. v. Century Indem. Co. 321 Mass. 220, 224. He cannot be said to have been in error in his determination that there was no exercise of due diligence in this case.
2. Relative to the Lloyd’s cover notes, the plaintiff alleges that any defence of “lateness of notice” is not available in that Lloyd’s did send an adjuster shortly after the fire and, hence, referring again to G. L. c. 175, § 102, must be deemed to have waived the requirements for notice and proof of loss. He argues that Lloyd’s cannot work a forfeiture “simply because the adjuster did not also represent Home nor on ambiguous language in its cover note.” Lloyd’s, however, has taken the position that it “does not rely upon lateness of notice in connection with its refusal to settle the two policies containing the warranty clause,” further stating that the dispatch of an adjuster and consequent settlement under the third Lloyd’s policy which did not contain a warranty clause have no bearing on its liability under the policies which did contain that clause. The merit of its defence can be ascertained only by appropriate interpretation of the language, “Warranted same terms and conditions as and to follow the settlements of Home Ins. Company . . .. ”
Lloyd’s has cited Barnard v. Faber, [1893] 1 Q. B. 340, and Beauchamp v. Faber, [1898] 14 T. L. R. 544. The Beauchamp case, similar to the case at bar, involved a situation where the primary insurance was in effect at the time of the loss but recovery was denied on the basis of a clause in the policy. It was held that recovery on the warranty policy was also defeated thereby. Federal Intermediate Credit Bank v. Globe & Rutgers Fire Ins. Co. 7 F. Supp. 56, 65-66, cited the Barnard case with approval, stating that “the liability of the particular policy [Lloyd’s3 will depend on the liability of the other policy [Home3 for loss occurring,” and further said, “[Qt is apparent that the purpose of the [warranty3 clause is to require concurrency.” This view commends itself to us.
*504As we see it, the word “follow” in the clause can be interpreted to mean either later in point of time or to be of the same nature of settlement as that of the local company. In either case since compliance with the warranty is a condition precedent to recovery, there is no liability on Lloyd’s in this matter. See Charles, Henry & Crowley Co. Inc. v. Home Ins. Co. 349 Mass. 723, 726.
Exceptions overruled.