NOTIFICATION LETTER AND REQUEST FORM TO NON-REGISTERED HOLDERS: (1) ANNUAL GENERAL MEETING ("AGM"); AND (2) NOTICE OF PUBLICATION OF 2020 ANNUAL REPORT, CIRCULAR, NOTICE OF MEETING AND FORM OF PROXY IN RELATION TO THE AGM

NOTIFICATION LETTER

31 March 2021

Dear Non-registered Holder(s) (1),

Hutchison Telecommunications Hong Kong Holdings Limited (the "Company")

1.

Annual General Meeting of the Company (the "AGM")

The AGM will be held on Monday, 10 May 2021 at 12:30 pm at the Conference Room, 18th Floor, Hutchison Telecom Tower, 99 Cheung Fai Road, Tsing Yi, Hong Kong.

Online Attendance at the AGM

In addition to physical attendance, you, as a Non-registered Holder whose shares are held in the Central Clearing and Settlement System ("CCASS") through banks, brokers, custodians, nominees or HKSCC Nominees Limited (together, the "Intermediary") have the option of attending, participating and voting at the AGM through online access by visitinghttps://web.lumiagm.com. If you attend the AGM online, you will be able to view a live webcast of the AGM, cast your vote on the resolutions in real time and submit online questions to the Company. The online platform will be open for shareholders to log in approximately 30 minutes prior to the commencement of the AGM (i.e. around 12:00 noon on 10 May 2021).

In order to attend the AGM online, you need to (i) contact your Intermediary to appoint you as a proxy and (ii) provide your e-mail address to your Intermediary, before the time limit required by your Intermediary. Details regarding the AGM arrangements including the login details to access the AGM online platform will be sent by Computershare Hong Kong Investor Services Limited, the Hong Kong Share Registrar of the Company (the "HK Share Registrar") to the e-mail address provided by you.

Please keep the login details in safe custody for use at the AGM and do not disclose them to anyone else.

2.

Notice of publication of 2020 Annual Report, Circular, Notice of Meeting and Form of Proxy in relation to the AGM ("Current Corporate Communications")

The English and Chinese versions of the Current Corporate Communications are available on the website of the Company atwww.hthkh.com (click "Investor Relations", then "Annual & Interim Reports" or "Regulatory Filings") and that of Hong Kong Exchanges and Clearing Limited ("HKEx") atwww.hkexnews.hk. You may access the Current Corporate Communications through the above websites.

If you wish to receive printed version(s) of Corporate Communications (2) of the Company going forward, please complete the Request Form enclosed with this letter and return it to the Company c/o the HK Share Registrar by using the mailing label at the bottom of the Request Form (no stamp needs to be affixed if posted in Hong Kong). The address of the HK Share Registrar is 17M Floor, Hopewell Centre, 183 Queen's Road East, Wanchai, Hong Kong. The Request Form may also be downloaded from the website of the Company atwww.hthkh.comor that of HKEx atwww.hkexnews.hk.

Should you have any queries relating to the above matters, please call the telephone hotline of the HK Share Registrar at (852) 2862 8688 during business hours from 9:00 am to 6:00 pm Mondays to Fridays, excluding public holidays.

Yours faithfully,

For and on behalf of

Hutchison Telecommunications Hong Kong Holdings Limited Edith Shih

Non-executive Director and Company Secretary

Notes:

• (1) This letter is addressed to Non-registered Holders of the Company (a "Non-registered Holder" means such person or company whose shares in the Company are held in CCASS and who has notified the Company from time to time through Hong Kong Securities Clearing Company Limited to receive Corporate Communications). If you have sold or transferred your shares in the Company, please disregard this letter and the enclosed Request Form.

• (2) "Corporate Communications" includes without limitation (a) directors' reports, annual financial statements together with the independent auditor's reports and, where applicable, summary financial reports; (b) interim reports and, where applicable, summary interim reports; (c) notices of meetings; (d) listing documents; (e) circulars; and (f) proxy forms.

CCS8426

HTHH_NRH

Request Form 申請表格

I/We would like to receive the Corporate Communications* of the Company in the manner as indicated below: 本人／吾等希望以下列方式收取 貴公司之公司通訊*：

(Please mark a "X" in ONLY ONE of the following boxes.) （請僅在其中一個空格內劃上「X」號。）

• to receive the printed English version of Corporate Communications ONLY; OR 僅收取公司通訊之英文印刷本；或

• to receive the printed Chinese version of Corporate Communications ONLY; OR 僅收取公司通訊之中文印刷本；或

• to receive both printed English and Chinese versions of Corporate Communications. 同時收取公司通訊之英文及中文印刷本。

Name(s) of Non-registered Holder(s)# 非登記持有人姓名#

Signature 簽名

( Please use ENGLISH BLOCK LETTERS 請用英文正楷填寫 )

Address# 地址#

( Please use ENGLISH BLOCK LETTERS 請用英文正楷填寫 )

Contact telephone number 聯絡電話號碼

Date 日期

#

You are required to fill in the details if you download this Request Form from the Company's website or the website of Hong Kong Exchanges and Clearing Limited.

如 閣下從本公司網站或香港交易及結算所有限公司網站下載本申請表格，務必填上有關資料。

Notes 附註：

• 1. Please complete all your details clearly.

  請 閣下清楚填妥所有資料。

• 2. This letter is addressed to Non-registered Holders of the Company (a "Non-registered Holder" means such person or company whose shares in the Company are held in The Central Clearing and Settlement System (CCASS) and who has notified the Company from time to time through Hong Kong Securities Clearing Company Limited to receive Corporate Communications).

  此為致本公司非登記持有人（「非登記持有人」指該等持有本公司股份並存放於中央結算及交收系統之人士或公司，透過香港中央結算有限公司不時向本公司發出

  通知，表示欲收取公司通訊）之函件。

• 3. Any form with more than one box marked "X", with no box marked "X", with no signature or otherwise incorrectly completed will be void. 如於本表格在超過一個空格內劃上「X」、或未有在空格內劃上「X」、或未有簽署、或在其他方面填寫不正確，則本表格將會作廢。

• 4. The above instruction will apply to the Corporate Communications to be sent to you until you notify to the Company c/o Computershare Hong Kong Investor Services Limited to the contrary or unless you have at any time ceased to have holdings in the Company.

  上述指示適用於發送予 閣下之公司通訊，直至 閣下通知本公司經香港中央證券登記有限公司以另作安排或任何時候不再持有本公司之股份。

• 5. For the avoidance of doubt, we do not accept any other special instruction written on this Request Form. 為免存疑，本公司概不接受於本申請表格上書寫之任何其他特定指示。

* "Corporate Communications" includes without limitation (a) directors' reports, annual financial statements together with the independent auditor's reports and, where applicable, summary financial reports; (b) interim reports and, where applicable, summary interim reports; (c) notices of meetings; (d) listing documents; (e) circulars; and (f) proxy forms. 「公司通訊」包括但不限於：(a)董事會報告、年度財務報表聯同獨立核數師報告及（如適用）財務摘要報告；(b)中期報告及（如適用）中期摘要報告；(c)會議通告； (d)上市文件；(e)通函；及(f)代表委任表格。

PERSONAL INFORMATION COLLECTION STATEMENT 收集個人資料聲明

• (i) "Personal Data" in these statements has the same meaning as "personal data" in the Personal Data (Privacy) Ordinance, Chapter 486 of the Laws of Hong Kong ("PDPO").

  本聲明中所指的「個人資料」具有香港法例第 486 章《個人資料（私隱）條例》（「《私隱條例》」）中「個人資料」的涵義。

• (ii) The supply of your Personal Data to the Company is on a voluntary basis and such data will be used for processing your instru ctions and/or requests as stated in this form.

  閣下是自願向本公司提供 閣下個人資料，該等資料用以處理 閣下在本表格上所述的指示及／或要求。

• (iii) Your Personal Data will not be transferred to any third parties (other than the Share Registrars of the Company) unless it is a requirement to so do by law, for example, in response to a court order or a law enforcement agency's request and will be retained for such period as may be necessary for our verification and record purposes.

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  除非按法例規定，例如應法庭命令或執法機關的要求，否則 閣下的個人資料將不會轉交任何第三方（本公司之股份過戶登記處除外）及將在適當期間保留作核實及記錄用途。

• (iv) You have the right to request access to and/or to correct your Personal Data in accordance with the provisions of the PDPO. Any such request should be in writing addressed to the Personal Data Privacy Officer of Computershare Hong Kong Investor Services Li mited at 17M Floor, Hopewell Centre, 183 Queen's Road East, Wanchai, Hong Kong.

  閣下有權根據《私隱條例》的條文要求查閱及／或修改 閣下的個人資料。任何該等要求均須以書面方式向香港中央證券登記有限公司（地址為香港灣仔皇后大道東 183 號合和中心 17M 樓）的個人資料私隱主任提出。