Contract analysis

1. Engagement and Scope of Representation Calderwood & Harkness LLP ("C&H," the "Firm," "we," or "us") is pleased to confirm its engagement by Northgate Telecommunications PLC ("Northgate," "NTP," or the "Company"), a public limited company organized under the laws of England and Wales (registered number 07381264), with its principal United Kingdom offices located at 45 Canary Wharf Tower, One Canada Square, London E

2. Engagement Team The following attorneys will be primarily responsible for the provision of legal services in connection with this engagement: Ms. Vasquez, as Responsible Partner, will have overall supervisory responsibility for the engagement and will serve as the primary point of contact for all communications between the Firm and the Company. Mr. Crawford, as Billing Partner, will have administrative responsibil

3. Client Identification It is important that the identity of our client in this engagement be clearly understood. The client in this engagement is Northgate Telecommunications PLC, together with its subsidiary Northgate Telecommunications US, Inc., to the extent that NTP US is a party to the Employment Agreement that is the subject of this engagement. References in this letter to "the Company" or "Northgate" shall b

4. Fees and Billing Arrangements 4.1 Hourly Rates Professional fees for legal services rendered in connection with this engagement will be charged on an hourly basis at the following standard rates for the named timekeepers: The rates set forth above are the Firm's current standard rates for the named timekeepers and reflect the rates in effect as of the date of this engagement letter. These rates are subject to adju

5. Retainer Upon execution of this engagement letter, the Company agrees to pay to the Firm a retainer in the amount of Seventy-Five Thousand Dollars ($75,000.00). The retainer shall be deposited into the Firm's client trust account (an Interest on Lawyers' Account, or "IOLTA" account, maintained in accordance with the requirements of the New York Rules of Professional Conduct) and held in trust for the benefit of th

6. Conflicts of Interest Prior to undertaking this engagement, the Firm conducted a comprehensive conflicts of interest check in accordance with its standard conflicts clearance procedures and the applicable provisions of the New York Rules of Professional Conduct. The conflicts check encompassed the following parties and entities: • Northgate Telecommunications PLC (and its subsidiaries, including Northgate Telecomm

7. Confidentiality All information, documents, and communications provided by the Company to the Firm in connection with this engagement, including but not limited to information regarding the Company's business, financial condition, strategic plans, compensation practices, and the terms under negotiation for the Employment Agreement, will be treated by the Firm as strictly confidential. Such information is and shall

8. Termination of Engagement Either party may terminate this engagement at any time, with or without cause, by providing written notice to the other party. In the case of termination by the Firm, such termination shall be subject to the Firm's obligations under the applicable Rules of Professional Conduct, including the obligation to take reasonable steps to avoid prejudice to the Company's interests. Upon terminatio

9. Document Retention Upon the conclusion of this engagement, the Firm will retain copies of the engagement file, including correspondence, memoranda, drafts, research materials, and other documents generated in connection with the representation, in accordance with the Firm's standard document retention policy. The Firm's current retention period for closed matter files is ten (10) years from the date of the final i

10. Limitation of Engagement This engagement is limited in scope to the matters described in Section 1 of this letter. The Firm has not been retained to provide, and does not undertake to provide, legal advice or representation to the Company in connection with any matter that falls outside the scope of this engagement, unless and until the parties agree in writing to expand the scope of the engagement or enter into

11. Governing Law This engagement letter and the relationship between the Firm and the Company arising out of or in connection with this engagement shall be governed by, and construed in accordance with, the laws of the State of New York, without regard to its conflict of laws principles. Any dispute arising out of or relating to this engagement letter or the services provided hereunder shall be subject to the exclus

12. Communication Unless otherwise agreed, communications regarding this engagement should be directed to the following individuals: For the Firm: Renata Vasquez, Partner Calderwood & Harkness LLP 299 Park Avenue, 42nd Floor New York, NY 10171 Telephone: (212) 506-7124 Email: rvasquez@calderwoodharkness.com For the Company: Elaine Whitford Senior Vice President & Group General Counsel Northgate Telecommunications PLC

13. Acceptance and Execution We are grateful for the opportunity to represent Northgate Telecommunications PLC in connection with this matter. If the terms and conditions set forth in this engagement letter are acceptable to the Company, we respectfully request that you confirm the Company's agreement by signing and dating this letter in the space provided below and returning the executed original to the undersigned