High Court of Delhi (Jasmeet Singh, J.), ARB.P. 2116/2024, order dated 03.09.2025 — Petition under Section 11(6) of the Arbitration and Conciliation Act, 1996 by M/s Singh Finlease Pvt. Ltd. for appointment of an arbitrator under Clause 21 of the Loan Agreement dated 26.12.2019 (loan of Rs. 32,03,300/- @ 24% p.a.; Respondent No. 1 principal borrower, Respondent Nos. 2-4 co-borrowers). Respondent No. 3 objected that the legal notice dated 18.11.2024 was a defective invocation under Section 21 — the petitioner should first have nominated the arbitrator, giving respondents 30 days under Section 11(5) to object, failing which alone could a Section 11(6) petition be filed — relying on D.P. Construction v. Vishvaraj Environment (P) Ltd., 2022 SCC OnLine Bom 1410. Held: (i) applying the criteria set out in this Court's earlier order in The Prasar Bharti v. Visual Technologies India Pvt. Ltd. (ARB.P. 558/2023), the notice — whose subject invoked Clause 21, identified the disputes, demanded outstanding payment, and stated that on non-payment within 7 days the petitioner would initiate appointment under Section 11(6) — amounted to a valid Section 21 notice; (ii) D.P. Construction is distinguishable, its applicant having neither referred to the arbitration clause nor shown intent to invoke arbitration; (iii) the prematurity objection is meritless, more than 30 days having elapsed since 18.11.2024; (iv) the submission that the petitioner ought to have nominated its own arbitrator is misplaced, Clause 21's sole nomination power in the lender being contrary to Perkins Eastman Architects DPC & Ors. v. HSCC (India) Ltd., (2020) 20 SCC 760 (an interested party must not appoint the arbitrator). Petition allowed: Ms. Neelampreet Kaur appointed Sole Arbitrator; arbitration under DIAC aegis/rules; fees per DIAC (Administrative Cost and Arbitrators’ Fees) Rules, 2018; declaration under Section 12 required; arbitrability, preliminary objections, claims/counter-claims and merits left open; parties to approach the arbitrator within two weeks; petition disposed of in those terms.